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53 (number)

53 (number)

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Cardinal fifty-three

Ordinal 53rd (fifty-third) Factorization prime Prime 16th Divisors 1, 53 Greek numeral ΝΓ´ Roman numeral LIII Binary 1101012 Ternary 12223 Senary 1256 Octal 658 Duodecimal 4512 Hexadecimal 3516

53 (fifty-three) is the natural number following 52 and preceding 54. It is the 16th prime number.

Contents

1 In mathematics 2 In science 2.1 Astronomy 3 In other fields 4 Sports 5 See also 6 References

In mathematics[edit]

Fifty-three is the 16th prime number. It is also an Eisenstein prime, and a Sophie Germain prime.[1]

The sum of the first 53 primes is 5830, which is divisible by 53, a property shared by only a few other numbers.[2][3]

53 written in hexadecimal is 35, that is, the same characters used in the decimal representation, but reversed. Four additional multiples of 53 share this property: 371 = 17316, 5141 = 141516, 99481 = 1849916, and 8520280 = 082025816. Apart from the trivial case of single-digit decimals, no other number has this property.[4]

53 cannot be expressed as the sum of any integer and its base-10 digits, making 53 a self number.[5]

53 is the smallest prime number that does not divide the order of any sporadic group.

In science[edit]

The atomic number of iodine

Astronomy[edit]

Messier object M53, a magnitude 8.5 globular cluster in the constellation Coma Berenices

The New General Catalogue object NGC 53, a magnitude 12.6 barred spiral galaxy in the constellation Tucana

In other fields[edit]

Fifty-three is:

Herbie film car used in the 1977 Disney film

The racing number of Herbie, a fictional Volkswagen Beetle with a mind of his own, first appearing in the 1968 film

The code for international direct dial phone calls to Cuba

53 Days is a northeastern USA rock band

a novel by Georges Perec

In , and its animated TV special adaptation the Grinch says he's put up with the Whos' Christmas cheer for 53 years.

Fictional 53rd Precinct in the Bronx was found in the TV comedy "Car 54, Where Are You?"

"53rd & 3rd" a song by the Ramones

The number of Hail Mary beads on a standard, five decade Catholic Rosary (the Dominican Rosary).[6]

The number of bytes in an Asynchronous Transfer Mode packet.

UDP and TCP port number for the Domain Name System protocol.

53-TET (53 tone, equal temperament) is a musical temperament that has a fifth that is closer to pure than our current system.

is a book mentioned in The Hitchhiker's Guide to the Galaxy

Sports[edit]

The maximum number of players on a National Football League roster

Most points by a rookie in an NBA playoff game, by Philadelphia's Wilt Chamberlain, 1960

Most field goals (three-game series, NBA playoffs), by Michael Jordan, 1992

See also[edit]

List of highways numbered 53

References[edit]

^ Sloane, N. J. A. (ed.). "Sequence A005384 (Sophie Germain primes)". . OEIS Foundation. Retrieved 2016-05-30.^ Sloane, N. J. A. (ed.). "Sequence A045345 (Numbers n such that n divides sum of first n primes A007504(n).)". . OEIS Foundation.^ Puzzle 31.- The Average Prime number, APN(k) = S(Pk)/k from The Prime Puzzles & Problems Connection website^ "elementary number theory - Decimal/hex palindromes: why multiples of 53?". . June 16, 2015. Retrieved 29 September 2018.^ Sloane, N. J. A. (ed.). "Sequence A003052 (Self numbers)". . OEIS Foundation. Retrieved 2016-05-30.^ "Rosary Workshop: Rosary - origin of rosary prayers".

vte Integers 0s

0  1  2  3  4  5  6  7  8  9

10111213141516171819

20212223242526272829

30313233343536373839

40414243444546474849

50515253545556575859

60616263646566676869

70717273747576777879

80818283848586878889

90919293949596979899

100s 200s 300s 400s 500s 600s 700s 800s 900s ≥1000

Categories: Integers

منبع مطلب : en.wikipedia.org

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