The Quite Incredible Number List: 301-400

301: The Singer 301 was the 1st Slant-needle sewing machine. (nimravus)

302: The Model 302 telephone was manufactured in the United States between 1937 and 1955. (Ed.)

303: No. 303 ("Kościuszko") Polish Fighter Squadron was one of 16 Polish squadrons in the Royal Air Force during the Second World War. It was the highest scoring RAF squadron of the Battle of Britain. (Spoilt Victorian)

304: The early Roman calendar consisted of 304 days divided into 10 months. The remaining 61 days of the solar year do not seem to have been counted. (Ed.)

305: From IMDb: "Based on the online smash hit, '305' is a mockumentary detailing the misadventures of five not-so-brave members of the Spartan army charged with guarding a seemingly ordinary goat path. But when their actions lead to the death of King Leonidas and his army of 300 men, the five must find a way to redeem themselves and save Sparta from invasion." (Spoilt Victorian)

306: The Peugeot 306 was manufactured between 1993 and 2002. (Zebra57)

307: The Peugeot 307 was the successor to the 306, manufactured in Europe between 2001 and 2008. (PDR)

308: 308 Holloway Road is the address of the aeromodelling emporium of Henry J Nicholls - one of the true characters on model flying in the 50s and 60s. (PDR)

309: No. 309 (Land of Czerwien) Polish Fighter-Reconnaissance Squadron was a Polish squadron formed in Great Britain as part of an agreement between the Polish government in exile and the United Kingdom and the UK in 1940. (Strawberry)

310: The 310 destroyer U.S.S. Ward was the first American ship to sink an enemy vessel in World War II. Her sister, the U.S.S. Rueben James, was the first U.S. DD lost in action in the same war. (nimravus)

311: 311 is an American rock band from Omaha, Nebraska. (Ed.)

312: 312 persons died of drug or alcohol abuse in Jeddah in 2011. (Oceans Edge)

313: 313 is a palindromic prime in both decimal and binary. Binary representation: 100111001. (krollo)

314: A circle with a radius of 50 units has a circumference of approximately 314 units (actually 314.159..., which is 100 times pi). (Ed.)

315: 315 was a class of train which was replaced by the new Elizabeth Line stock. (Ed.)

316: 316 is the largest integer with a five-digit square. (316² = 99856, 317² = 100489.) (Ed.)

317: 317 Roxane is a main belt asteroid, about 19km in diameter. It was discovered by Auguste Charlois from Nice on September 11, 1891. The name was chosen by F. Bidschof, an assistant at theVienna Observatory, at Charlois's request; Bidschof chose to name it after Roxana, the wife of Alexander the Great, and at first used the spelling Roxana. (markashley1961)

318: The British Rail Class 318 is an electric multiple unit train in western Scotland. (Strawberry)

319: 319 is a song by Prince, on his 17th album the Gold Experience. (Ed.)

320: There are 320 rods in a mile (a rod being 5½ yards. (Ed.)

321: 3-2-1 was a popular British game show that was made by Yorkshire Television for ITV. It ran for ten years, between 29 July 1978 and 24 December 1988, with former Butlins Redcoat Ted Rogers as the host. (markashley1961)

322: Skull and Bones, also known as Order 322, is an undergraduate senior secret student society at Yale University in New Haven, Connecticut. (Ed.)

323: 323 Brucia was the first asteroid to be discovered by the use of astrophotography. It was named in honour of Catherine Wolfe Bruce. (Strawberry)

324: 324 is 18 squared. (Ed.)

325: In November 2022, A sneaker care company broke a Guinness World Record in London when 325 people cleaned shoes at the same time. (Ed.)

326: USSR type R-326 is a self-contained HF intercept or monitoring receiver developed in the late 1950s. It replaced the R-311. The receiver was used either as a man-pack or man-portable, but was also fitted in vehicles. (markashley1961)

327: The Chevy 327 small block engine was produced between 1962 and 1969. It was the first of the 4" bore small blocks. The 4" bore is considered amongst enthusiasts as the 'pick of the bunch'. (Oceans Edge)

328: 328 is the sum of the first fifteen prime numbers: 328 = 2 + 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23 + 29 + 31 + 37 + 41 + 43 + 47. (Nehushtan)

329: LOCTITE® AA 329 (known as Loctite 329) is a straw-coloured, structural bonding liquid with a fast fixture time of 1 min that is activated with LOCTITE® SF 7386. (Big Martin)

330: The place where 33°30'N meets 33°30'E is near the Southern end of the island of Cyprus, in the Mediterranean Sea, believed to host vast, unexplored archeological resources from nearby ancient cultures, allegedly even the lost city of Atlantis. Recent sonar imagery of the region reveals underwater structures resembling canals measuring 330 feet wide with 33-foot-high walls. (Izzardesque)

331: "Rondo Alla Turca" is the popular name for the finale of Mozart's Piano Sonata in A, KV 331. (Nehushtan)

332: Year 332 (CCCXXXII) was a leap year starting on Saturday of the Julian calendar. At the time, it was known as the Year of the Consulship of Pacatianus and Hilarianus (or, less frequently, year 1085 Ab urbe condita). ('yorz)

333: AL 333, commonly referred to as the "First Family", is a collection of prehistoric hominid teeth and bones. Discovered in 1975 by Donald Johanson's team in Hadar, Ethiopia, the "First Family" is estimated to be about 3.2 million years old and consists of the remains of at least thirteen individuals. (krollo)

334: 334 is a science fiction novel by Thomas M. Disch. It was written in 1972 and set in New York in 2025. (Strawberry)

335: The Supermarine Type 335 was originally the type number allocated to an export order for spitfires for Greece which was refused an export license by the UK Government. The type-number was later re-used for a float-plane versions of the Spitfire initially considered for the defence of Norway, then the eastern Med and finally as part of the Tiger Force to invade Japan. Only trials aircraft were ever built and they never entred service despite being both high-performance and barely less manoeuverable than the float-less version. Coincidentally the Spitfire's successor (with a laminar-flow wing) was call the Spiteful, and the naval (carrier-borne) version of this was called the Seafang, which had a wing area of 335 square feet. (PDR)

336: The 336th Bomber Squadron, callsign "Olympus", is the second oldest squadron in service with the Hellenic Air Force, forming part of the 116th Combat Wing. ('yorz)

337: 337 was the year when the Roman empire was split in twain. Only the eastern lasted 1000 years (if you ignore the sacking of Constantinople). (Posital)

338: The 338 Lapua Magnum is a specialized rimless bottlenecked centerfire cartridge developed for military long-range sniper rifles. (Awitt)

339: The Aermacchi MB-339 is an Italian military trainer and light attack aircraft. It was developed as a replacement for the earlier MB-326. (Big Martin)

340: 340 = 4¹ + 4² + 4³ + 4⁴. (Ed.)

341: 341 is the first "Fermat pseudoprime" to base 2. All primes p (except 2) have the property that p divides 2^p-1 with remainder 1, but the converse is not necessarily true. If p divides 2^p-1 with remainder 1, then p is prime for all values of p < 341. However 341 divides 2³⁴⁰ with remainder 1, but is equal to 11 x 31. (GuyBarry)

342: During The Boston Tea Party (Thursday, December 16, 1773) 342 containers of tea (that's 90,000 lbs, or 45 tons) were thrown overboard. (nimravus)

343: The speed of sound in air is approximately 343 metres per second. (Ed.)

344: The A344 is a road that gradually disappeared from the map. Its original route was from Weyhill near Andover in Hampshire to Heytesbury near Warminster in Wiltshire, but the eastern section was incorporated into the A303 in the 1930s, and the western section was downgraded to a B-road in the 1970s. This left a two-mile stub near Stonehenge, which was officially closed in June 2013 to allow the stones to appear in a more natural setting. (GuyBarry)

345: The Kadamba dynasty in India was founded in approximately 345 AD. (Ed.)

346: In Dewey Decimal Classification the number 346 refers to Private Law. A personal favourite category there is: 346.94046959222 Kangaroos--resource economics--law. (AlmondFacialBar)

347: 347 is a so-called "Friedman number": it can be represented in a non-trivial fashion using only its own digits and the standard arithmetic operators, viz. 347 = 7³ + 4. (GuyBarry)

348: Section 348 of the Commonwealth Migration Act of 1958, is where decisions must be reviewed subject to sub-section 2, if an application has been made properly. But it cannot be reviewed under Section 339 if a conclusive certificate has been registered. (Awitt)

349: There are 349 seats in the Riksdag/Swedish Parliament. (Strawberry)

350: It was reported in 2013 that a trust fund set up by an anonymous donor in 1928 for the purposes of paying off the National Debt had grown to £350 million, but the money could not be used because of the stipulation that the entire debt must be paid off at once (at the time £1.2 trillion, or around 3400 times as much). (GuyBarry)

351: 351 is the international phone code for Portugal. (Awitt)

352: City Ordinance number 352 in Pacific Grove, CA makes it a misdemeanour to kill or threaten a butterfly. (nimravus)

353: 353 is the smallest number whose fourth power can be written as the sum of four fourth powers: 353⁴ = 30⁴ + 120⁴ + 272⁴ + 315⁴. (GuyBarry)

354: 354 is the telephone code for Iceland. (Awitt)

355: 355/113 is an astonishingly close rational approximation to pi, being within 0.000009% of the true value. To get a better rational approximation you need five digits in the denominator (52163/16604). (GuyBarry)

356: 356 BC is the first recorded time a non-noble was chosen as Dictator of Rome. Gaius Marcius Rutilus was interesting in his own right, because he ordered the first recorded attack by night against an enemy (the Etruscans) on the field of battle, before they were 'ready', and captured over 8000 prisoners, routing the Etruscans with almost no losses. However, the patricians in the Senate refused to award him a Triumph a procession, an arch, a set of laurel leaves) because they hated him for his plebeian roots. Not to be denied 'their' man's day, the people of Rome held a Triumph for him. When he stood for election as Consul five years later, the Senate cancelled the planned elections, but the people turned up and voted for him anyway. (chrisboote)

357: In a normal year in England and Wales, there are 357 days that are not designated as public holidays. This excludes leap years and any years that have additional bank holidays. (GuyBarry)

358: 358 is the International Dialling Code for Finland. (Big Martin)

359: Douglas Adams once claimed that 359 was the funniest three-digit number. (Ed.)

360: 360 is the U.S. Citizenship and Immigration Services l-form Petition for Amerasian, Widow(er) or Special Immigrant. (Strawberry)

361: 361 is the area code for the Corpus Christi in Texas. (Awitt)

362: Numbuh 362/Rachel McKenzie was a character in a cartoon called Codename: Kids Next Door. (Strawberry)

363: 363 AD saw the battle of Ctesiphon between the Romans and the Sassanid Persians. A tactical Roman victory, but they had to withdraw due to over-extended supply lines. (Big Martin)

364: 364 AD was the year Valentinian I (also known as Valentinian the Great) became the last great Emperor of the Western Roman Empire. (chrisboote)

365: 365 days is not the length of an Earth year (though it is of course the length of a common calendar year). (PDR)

366: 366 geometry (also called 366-degree geometry and megalithic geometry) is an hypothetical geometry (using a 366 degree as oppose to the standard 360 degree circle) that was used and created by an alleged megalithic civilization of Britain and France. This opinion is regarded, at best, as pseudoscience by all mainstream scientists. (nimravus)

367: Number 367 is a character from the Dept. Heaven video games. (Strawberry)

368: There are 368 ways to tile a 4x15 rectangle with the twelve pentominoes. (GuyBarry)

369: The Giants Causeway is No. 369 on the UNESCO World Heritage sites list. (Big Martin)

370: 3³ + 7³ + 0³ = 370. (chrisboote)

371: ...and 3³ + 7³ + 1³ = 371. There are only four three-digit numbers with this property, which are known as "narcissistic numbers". (GuyBarry)

372: The Halberg-Rassy 372 was the yacht of the year in 2010. (Big Martin)

373: Water boils at approximately 373 kelvin. (GuyBarry)

374: The Eppler 374 aerofoil section was very popular for aerobatic radio-controlled gliders in the mid 1980s, before being superseded by more advanced sections better suited to all-composite contruction. (PDR)

375: 375 is a purity mark in gold jewellery, indicating 375 parts per thousand. This is equivalent to 9 carat (24 carat being pure gold). (Awitt)

376: 376 is an automorphic number, meaning that 376 x 376 (141376) ends in 376. There are only two 3-digit automorphic numbers, the other being 625. (chrisboote)

377: The Aero Spacelines B-377 SG Super Guppy is a four-engine oversize-cargo freighter aircraft. (Strawberry)

378: 378 is the maximum number of regions a cube can be cut into with 13 cuts. (GuyBarry)

379: Highway 379 is in the Saskatchewan region of Canada. (Awitt)

380: The Airbus A380 is the world's largest passenger airliner. (GuyBarry)

381: 381 is (outdated) chatroom slang for "I love you" (3 words, 8 letters, 1 meaning). (chrisboote)

382: CAP382 is the Civil Aviation Authority's mandatory occurence reporting scheme. (Big Martin)

383: In the Hebrew calendar, a leap year is at least 383 days long. (GuyBarry)

384: A Chinese leap year may have 384 full days. (Strawberry)

385: 385 is the sum of the first ten perfect squares. If you stack spheres in the shape of a pyramid with a square base, ten spheres per side, then you will need exactly 385 of them. (GuyBarry)

386: The National Pokédex number for Deoxys is 386. (Strawberry)

387: In 2009, Norway won the Eurovision Song Contest with 387 points - at the time the highest total in the history of the competition. (GuyBarry)

388: The Junkers Ju 388 was a Germany World War II aircraft. (Strawberry)

389: The Best 389 Colleges is a publication by the Princeton Review, based on its surveys of college students in the US about their schools. (Ed.)

390: The 390 is a medium-size, twin-engine jet-powered military transport aircraft under development by Brazilian aerospace manufacturer Embraer. (Awitt)

391: BA391 is the British airways flight from Tenerife to London Heathrow. (franticllama)

392: 392 is the second Japanese album by the South Korean rock band CN Blue. (GuyBarry)

393: Aer Lingus flight EI393 goes from Hamburg to Dublin. (AlmondFacialBar)

394: "Turn to page 394" is a line used by Alan Rickman's character Severus Snape in the film version of Harry Potter and the Prisoner of Azkaban, which has become something of an internet meme. It doesn't seem to have any great significance, but Rickman repeats it several times in a rather menacing voice. (GuyBarry)

395: 395 is the number of the high featured QR-calculating time recorder was developed for easy payroll operation. (Awitt)

396: 396 is equal to the sum of all numbers formed from permutated samples of two of its digits: 396 = 36 + 63 + 39 + 93 + 69 + 96. (GuyBarry)

397: If you play Settlers of Catan, you probably already know that 397 is the number of hexes on a Settlers board with 12 hexes per side. (chrisboote)

398: The road number A398 has not been used in Great Britain since 1935. It originally ran from Norton Fitzwarren in Somerset to South Molton in Devon, but was absorbed into the A361. Nowadays it is part of the B3227. (GuyBarry)

399: 399 is the smallest Lucas-Carmichael number. (Strawberry)

400: The Gregorian calendar cycle repeats itself exactly (including the day of the week) once every 400 years. (GuyBarry)