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269 (number)

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Title: 269 (number)  
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Subject: List of prime numbers, 270 (number), Full reptend prime, 260 (number), List of numbers
Collection: Integers
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269 (number)

268 269 270
Cardinal two hundred sixty-nine
Ordinal 269th
(two hundred and sixty-ninth)
Factorization 269
Prime yes
Roman numeral CCLXIX
Binary 1000011012
Ternary 1002223
Quaternary 100314
Quinary 20345
Senary 11256
Octal 4158
Duodecimal 1A512
Hexadecimal 10D16
Vigesimal D920
Base 36 7H36

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

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]

See also


  1. ^ "Sloane's A001359 : Lesser of twin primes", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  2. ^ "Sloane's A104272 : Ramanujan primes", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  3. ^ "Sloane's A002583 : Largest prime factor of n! + 1", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  4. ^ "Sloane's A013588 : Smallest positive integer not the determinant of an n X n 0-1 matrix", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.

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