263 (number)
From HandWiki
Short description: Natural number
| ||||
|---|---|---|---|---|
| Cardinal | two hundred sixty-three | |||
| Ordinal | 263rd (two hundred sixty-third) | |||
| Factorization | prime | |||
| Prime | yes | |||
| Greek numeral | ΣΞΓ´ | |||
| Roman numeral | CCLXIII | |||
| Binary | 1000001112 | |||
| Ternary | 1002023 | |||
| Quaternary | 100134 | |||
| Quinary | 20235 | |||
| Senary | 11156 | |||
| Octal | 4078 | |||
| Duodecimal | 19B12 | |||
| Hexadecimal | 10716 | |||
| Vigesimal | D320 | |||
| Base 36 | 7B36 | |||
263 (two hundred [and] sixty-three) is the natural number between 262 and 264. It is also a prime number.
In mathematics
263 is a balanced prime,[1] an irregular prime,[2] a Ramanujan prime,[3] a Chen prime,[4] and a safe prime.[5]
It is also a strictly non-palindromic number and a happy number.[6]
References
- ↑ Sloane, N. J. A., ed. "Sequence A006562 (Balanced primes)". OEIS Foundation. https://oeis.org/A006562.
- ↑ Sloane, N. J. A., ed. "Sequence A000928 (Irregular primes)". OEIS Foundation. https://oeis.org/A000928.
- ↑ Sloane, N. J. A., ed. "Sequence A104272 (Ramanujan primes)". OEIS Foundation. https://oeis.org/A104272.
- ↑ "Sloane's A109611 : Chen primes". OEIS Foundation. https://oeis.org/A109611.
- ↑ Sloane, N. J. A., ed. "Sequence A005385 (Safe primes)". OEIS Foundation. https://oeis.org/A005385.
- ↑ "Sloane's A007770 : Happy numbers". OEIS Foundation. https://oeis.org/A007770.
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