269 (number)

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

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

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

• Area code 269
• Calf 269 animal liberation movement
• Hawkmoon 269 pop song by U2
• List of highways numbered 269

References

1. Sloane, N. J. A. (ed.). "Sequence A001359 (Lesser of twin primes)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
2. Sloane, N. J. A. (ed.). "Sequence A104272 (Ramanujan primes)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
3. Sloane, N. J. A. (ed.). "Sequence A002583 (Largest prime factor of n! + 1)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
4. Sloane, N. J. A. (ed.). "Sequence A013588 (Smallest positive integer not the determinant of an n X n 0-1 matrix)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.