269 (number)

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← 268 269 270 →
Cardinal two hundred sixty-nine
Ordinal 269th
(two hundred sixty-ninth)
Factorization prime
Prime yes
Greek numeral ΣΞΘ´
Roman numeral CCLXIX, cclxix
Binary 1000011012
Ternary 1002223
Senary 11256
Octal 4158
Duodecimal 1A512
Hexadecimal 10D16

269 (two hundred [and] sixty-nine) is the natural number between 268 and 270. It is also a prime number.

Contents

In mathematics

269 is a twin prime, [1] and a Ramanujan prime. [2] It is the largest prime factor of 9! + 1 = 362881, [3] and the smallest natural number that cannot be represented as the determinant of a 10 × 10 (0,1)-matrix. [4]

In other fields

Related Research Articles

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23 (twenty-three) is the natural number following 22 and preceding 24.

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72 (seventy-two) is the natural number following 71 and preceding 73. It is half a gross or six dozen.

71 (seventy-one) is the natural number following 70 and preceding 72.

32 (thirty-two) is the natural number following 31 and preceding 33.

103 is the natural number following 102 and preceding 104.

1000 or one thousand is the natural number following 999 and preceding 1001. In most English-speaking countries, it can be written with or without a comma or sometimes a period separating the thousands digit: 1,000.

300 is the natural number following 299 and preceding 301.

600 is the natural number following 599 and preceding 601.

800 is the natural number following 799 and preceding 801.

2000 is a natural number following 1999 and preceding 2001.

4000 is the natural number following 3999 and preceding 4001. It is a decagonal number.

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References

  1. ↑ Sloane, N. J. A. (ed.). "SequenceA001359(Lesser of twin primes)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
  2. ↑ Sloane, N. J. A. (ed.). "SequenceA104272(Ramanujan primes)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
  3. ↑ Sloane, N. J. A. (ed.). "SequenceA002583(Largest prime factor of n! + 1)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
  4. ↑ Sloane, N. J. A. (ed.). "SequenceA013588(Smallest positive integer not the determinant of an n X n 0-1 matrix)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
  5. ↑ Ahituv, Netta (21 March 2013). "The Israeli Calf That Started a Mass Tattoo Movement". Haaretz.
  6. ↑ Laylin, Tafline (4 April 2013). "269life Activists Etch and Burn White Calf Branding Number Into Skin". Green Prophet. Archived from the original on 8 April 2013.

See also

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