269 (number)
From Infogalactic: the planetary knowledge core
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|---|---|---|---|---|
| Cardinal | two hundred sixty-nine | |||
| Ordinal | 269th (two hundred and sixty-ninth) |
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| 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
- Area code 269
- Calf 269 animal liberation movement
- Hawkmoon 269 pop song by U2
- List of highways numbered 269
References
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- ↑ "Sloane's A001359 : Lesser of twin primes", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ↑ "Sloane's A104272 : Ramanujan primes", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ↑ "Sloane's A002583 : Largest prime factor of n! + 1", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ↑ "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.
