400s 401 401 is a
prime number,
tetranacci number,
Chen prime,
prime index prime •
Eisenstein prime with no imaginary part • Sum of seven consecutive primes (43 + 47 + 53 + 59 + 61 + 67 + 71) • Sum of nine consecutive primes (29 + 31 + 37 + 41 + 43 + 47 + 53 + 59 + 61) •
Mertens function returns 0, • Member of the
Mian–Chowla sequence.
402 402 = 2 × 3 × 67,
sphenic number,
nontotient,
Harshad number, number of graphs with 8 nodes and 9 edges •
HTTP status code for "Payment Required". • The
area code for
Nebraska.
403 403 = 13 × 31,
heptagonal number,
Mertens function returns 0. •
HTTP 403, the status code for "Forbidden" • Also in the name of a retirement plan in the United States,
403(b). • The
area code for southern Alberta.
404 404 = 22 × 101, Mertens function returns 0, • The
HTTP 404 status code is usually sent from a web page if a user attempts to reach a broken or dead link. It has since become one of the most commonly reached, and thus most recognizable errors on the World Wide Web. • One of the four area codes of the
Atlanta calling area.
405 405 = 34 × 5, Mertens function returns 0,
centered nonagonal number, even nontotient, Narayana's cow number •
HTTP status code for "Not Acceptable". •
406 is a poem by
John Boyle O'Reilly. It was believed to have been the number of one of O'Reilly's prison cells, and was the number of his first hotel room after he arrived in the United States. Hence the number had a
mystical significance to him, as intimated in the poem. •
Peugeot 406 car. •
Area code for all of
Montana.
407 407 = 11 × 37, • Sum of cubes of 4, 0 and 7 (43 + 03 + 73 = 407);
narcissistic number • Sum of three consecutive primes (131 + 137 + 139) • Mertens function returns 0 •
HTTP status code for "Proxy Authentication Required" • Area code for
Orlando, Florida • Colloquial name for the Express Toll Route in Ontario
408 408 = 23 × 3 × 17 • Sum of four consecutive primes (97 + 101 + 103 + 107) • Sum of eight consecutive primes (37 + 41 + 43 + 47 + 53 + 59 + 61 + 67) •
Pell number •
Mertens function returns 0 •
Untouchable number • Harshad number •
HTTP status code for "Request Timeout" • Area code for the Silicon Valley
409 409 is a prime number,
Chen prime, • A family of cleaning products,
Formula 409 • An engine known as the
Chevrolet 409, a 409 cubic inch W-series
V8. • The song "
409" by
The Beach Boys, inspired by the above engine •
HTTP status code for "Conflict" • A
Green Day song, "409 in Your Coffeemaker", included on their album
1,039/Smoothed Out Slappy Hours • The
area code for the corner of southeastern Texas •
Venice has 409 bridges. • A
Bullet For My Valentine song, "Room 409", from the album
The Poison •
Joe Paterno holds the record as the winningest head coach in
NCAA FBS with 409 victories.
410s 410 410 = 2 × 5 × 41,
sphenic number, sum of six consecutive primes (59 + 61 + 67 + 71 + 73 + 79), nontotient, Harshad number, number of triangle-free graphs on 8 vertices •
HTTP status code for "Gone". •
Area Code 410, a telephone area code for the US State of Maryland, representing portions of the state including the
Baltimore metropolitan area and the Eastern Shore.
411 411 = 3 × 137,
self number, •
HTTP status code for "Length Required", slang for information (see
4-1-1) • The number of possible
FM broadcasting frequencies between 87.50 and 108.00
MHz in 50 kHz spacing countries
412 412 = 22 × 103, nontotient, noncototient, sum of twelve consecutive primes (13 + 17 + 19 + 23 + 29 + 31 + 37 + 41 + 43 + 47 + 53 + 59),
41264 + 1 is prime •
HTTP status code for "Precondition Failed" • Area code for
Pittsburgh,
Pennsylvania. • Fictitious Police Code for "Overacting" from "St. George and the Dragonet" -
Stan Freberg 413 413 = 7 × 59,
Mertens function returns 0, :\sum_{n=0}^{10}{414}^{n} is prime •
HTTP status code for "Request-URI Too Long" •
Area code for
Milwaukee, Wisconsin. •
The 414s, a group of hackers from Milwaukee, Wisconsin.
415 415 = 5 × 83, logarithmic number •
HTTP status code for "Unsupported Media Type" •
415 Records, a record label • 415 refers to California
Penal Code, section 415, pertaining to public fighting, public disturbance, and public use of offensive words likely to provoke an immediate violent reaction. •
Area code 415, a telephone area code for San Francisco, California
416 416 = 25 × 13, number of independent vertex sets and vertex covers in the 6-sunlet graph •
HTTP status code for "Requested Range Not Satisfiable" • 416 is also
a nickname for the city of
Toronto, based on
the area code it used before
overlay plans added two more area codes.
417 417 = 3 × 139,
Blum integer •
HTTP status code for "Expectation Failed". Also the area code for southwestern Missouri, including
Springfield, and
Joplin.
418 418 = 2 × 11 × 19;
sphenic number, balanced number. It is also the fourth 71-
gonal number. • The
sum of the integers between
13 and
31, inclusive. • The
product of its digits as well as the sum of its
prime factors are both 32. Also,
131, a strong concatenation of 13 and 31, is the 32nd prime number (while the 32nd composite number is
48). • The sum of the
84 digits of the 22nd
unique prime in
decimal (having a very distinct set of digits than all other known terms in the
sequence). • The number of
Abrahadabra •
Hyper Text Coffee Pot Control Protocol status code for "Teapot" as an April Fools' joke.
419 A prime number,
Sophie Germain prime, Chen prime, Mertens function returns 0 also
SMTP code meaning the transmission channel will be closing •
Country calling code for
Slovakia 422 422 = 2 × 211, Mertens function returns 0,
423 423 = 32 × 47, Mertens function returns 0, •
Country calling code for
Liechtenstein 424 424 = 23 × 53, sum of ten consecutive primes (23 + 29 + 31 + 37 + 41 + 43 + 47 + 53 + 59 + 61), Mertens function returns 0, self number
centered tetrahedral number, sum of three consecutive primes (137 + 139 + 149), Mertens function returns 0, •
428: Shibuya Scramble, a video game
429 429 = 3 × 11 × 13, sphenic number,
Catalan number 430s 430 430 = 2 × 5 × 43, number of primes below 3000, sphenic number, untouchable number an
Achilles number and the sum of totient function for first 37 integers. 432! is the first factorial that is not a
Harshad number in base 10. 432 is also three-dozen sets of a dozen, making it three gross. An equilateral triangle whose area and perimeter are equal, has an area (and perimeter) equal to \sqrt{432}.
433 A prime number,
Markov number,
star number. • The perfect score in the game show
Fifteen To One, only ever achieved once in over 2000 shows. • 433 can refer to composer
John Cage's composition
4′33″ (pronounced "Four minutes, thirty-three seconds" or just "Four thirty-three").
434 434 = 2 × 7 × 31, sphenic number, sum of six consecutive primes (61 + 67 + 71 + 73 + 79 + 83), nontotient, maximal number of pieces that can be obtained by cutting an annulus with 28 cuts
435 435 = 3 × 5 × 29, sphenic number, 29th
triangular number,
hexagonal number, self number, • The number of members in the
US House of Representatives.
436 436 = 22 × 109, nontotient, noncototient, lazy caterer number • The "438 match" or "438 game" has been used by cricket media to describe
the famous 2006 One Day International in which
Australia scored a world record 434 in their innings, only to see
South Africa respond in their innings with 438.
439 A prime number, sum of three consecutive primes (139 + 149 + 151), sum of nine consecutive primes (31 + 37 + 41 + 43 + 47 + 53 + 59 + 61 + 67), strictly non-palindromic number
440s 440 441 441 = 32 × 72 = 212 • 441 is the sum of the cubes of the first 6 natural numbers (441 = 13 + 23 + 33 + 43 + 53 + 63). • 441 is a
centered octagonal number, a refactorable number, sphenic number, sum of eight consecutive primes (41 + 43 + 47 + 53 + 59 + 61 + 67 + 71)
443 A prime number, Sophie Germain prime, and a
repdigit. • The title of the final track of
Autechre's 1993 debut album
Incunabula. • The 444th Fighter Squadron "Spare", a fictional air squadron in
Ace Combat 7: Skies Unknown.
445 445 = 5 × 89, number of series-reduced trees with 17 nodes
446 446 = 2 × 223, nontotient, self number • The flight number of
Air France Flight 447 448 448 = 26 × 7, untouchable number, Also the largest number whose
factorial is less than 101000
450s 450 450 = 2 × 32 × 52, nontotient, sum of totient function for first 38 integers, refactorable number, and a
centered decagonal number; its reciprocal has period 10; 451 is the smallest number with this period
reciprocal length. • The novel
Fahrenheit 451 refers to the temperature in
Fahrenheit that author
Ray Bradbury understood to be the
autoignition point of
paper. • By extension, The numbers "451", and sometimes "0451", are often included as the first security code a player encounters in
Immersive sim video games as a reference to the
System Shock series of games which first included the code as their own reference to Bradbury's novel. •
HTTP 451 Unavailable For Legal Reasons is an HTTP status code returned the user requests an illegal resource, such as a web page censored by a government.
452 452 = 22 × 113, number of surface-points of a tetrahedron with edge-length 15 • SMTP code meaning that the requested mail action was not carried out because of insufficient system storage
453 453 = 3 × 151,
Blum integer 454 454 = 2 × 227, nontotient, a
Smith number •
455 Rocket is the title of a song by
Kathy Mattea • 455 kHz is a standard
intermediate frequency for analog
superheterodyne AM broadcast band receivers. • The sum of the squares of the first 455 primes is divisible by 455.
456 456 = 23 × 3 × 19, sum of a twin prime (227 + 229), sum of four consecutive primes (107 + 109 + 113 + 127),
centered pentagonal number,
icosahedral number • In the TV show
Torchwood: Children of Earth, the antagonists were an alien species with the designation 456. • One of the two values of the
magical formula,
IPSOS, the other being
696. • Number of contestants in the South Korean
Netflix drama
Squid Game.
457 • A prime number, sum of three consecutive primes (149 + 151 + 157), self number.
459 459 = 33 × 17, triangular matchstick number •
459 West 18th Street, a residential building at that address in
Manhattan's
West Chelsea neighborhood, built in 2008.
460s 460 460 = 22 × 5 × 23, centered triangular number,
Harshad number, sum of twelve consecutive primes (17 + 19 + 23 + 29 + 31 + 37 + 41 + 43 + 47 + 53 + 59 + 61)
461 A prime number, Chen prime,
sparsely totient number,
idoneal number 463 A prime number, sum of seven consecutive primes (53 + 59 + 61 + 67 + 71 + 73 + 79),
centered heptagonal number. This number is the first of seven consecutive primes that are one less than a multiple of 4 (from 463 to 503). • Number of days in the
synodic period of
Ceres • A common baseball
double play (see
baseball positions) • A single by
Buck 65, named after the baseball term
464 464 = 24 × 29,
primitive abundant number, since 464 = 212 + 21 + 2 it is the maximum number of regions into which 22 intersecting circles divide the plane, member of the
Padovan sequence, Harshad number
466 466 = 2 × 233, noncototient, lazy caterer number.
sexy prime with 461, Chen prime, 469! - 1 is prime.
470s 470 470 = 2 × 5 × 47, sphenic number, nontotient, noncototient,
cake number • In
golf, 470 is the minimum length in
yards from the tee to the hole on a Par 5. •
470 is an Olympic class of sailing
dinghy 471 471 = 3 × 157, sum of three consecutive primes (151 + 157 + 163),
perfect totient number, φ(471) = φ(σ(471)).
472 472 = 23 × 59, nontotient, untouchable number, • The
Amstrad CPC472 was a short-lived home computer for the Spanish market.
473 473 = 11 × 43, sum of five consecutive primes (83 + 89 + 97 + 101 + 103),
Blum integer 474 474 = 2 × 3 × 79, sphenic number, sum of eight consecutive primes (43 + 47 + 53 + 59 + 61 + 67 + 71 + 73), nontotient, noncototient, sum of totient function for first 39 integers, untouchable number,
475 475 = 52 × 19, 49-
gonal number, member of the Mian–Chowla sequence.
477 477 = 32 × 53,
pentagonal number 479 A prime number, safe prime, :\sum_{n=0}^{10}{480}^{n} is prime
483 483 = 3 × 7 × 23, sphenic number, Smith number •
RS-485 486 486 = 2 × 35, Harshad number,
Perrin number • Shorthand for the
Intel 80486 microprocessor chip.
487 A prime number, sum of three consecutive primes (157 + 163 + 167), Chen prime, • Shorthand for the
Intel 80487 floating point processor chip.
488 488 = 23 × 61, nontotient, refactorable number,
489 489 = 3 × 163,
octahedral number 490s 490 490 = 2 × 5 × 72, noncototient, sum of totient function for first 40 integers, number of
integer partitions of 19, self number.
492 492 = 22 × 3 × 41, sum of six consecutive primes (71 + 73 + 79 + 83 + 89 + 97), refactorable number,
494 494 = 2 × 13 × 19 =
\left\langle \!\! \left\langle {8 \atop 1} \right\rangle \!\! \right\rangle, sphenic number, nontotient
495 496 497 497 = 7 × 71, sum of five consecutive primes (89 + 97 + 101 + 103 + 107), lazy caterer number. abundant number
499 A prime number, isolated prime, Chen prime,
4499 - 3499 is prime == References ==