269 (number)
From HandWiki
Short description: Natural number
| ||||
|---|---|---|---|---|
| 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 | |||
| 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]
References
- ↑ Sloane, N. J. A., ed. "Sequence A001359 (Lesser of twin primes)". OEIS Foundation. https://oeis.org/A001359.
- ↑ Sloane, N. J. A., ed. "Sequence A104272 (Ramanujan primes)". OEIS Foundation. https://oeis.org/A104272.
- ↑ Sloane, N. J. A., ed. "Sequence A002583 (Largest prime factor of n! + 1)". OEIS Foundation. https://oeis.org/A002583.
- ↑ Sloane, N. J. A., ed. "Sequence A013588 (Smallest positive integer not the determinant of an n X n 0-1 matrix)". OEIS Foundation. https://oeis.org/A013588.
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