263 (number)

From HandWiki
Short description: Natural number
← 262 263 264 →
Cardinaltwo hundred sixty-three
Ordinal263rd
(two hundred sixty-third)
Factorizationprime
Primeyes
Greek numeralΣΞΓ´
Roman numeralCCLXIII
Binary1000001112
Ternary1002023
Quaternary100134
Quinary20235
Senary11156
Octal4078
Duodecimal19B12
Hexadecimal10716
VigesimalD320
Base 367B36

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

  1. ↑ Sloane, N. J. A., ed. "Sequence A006562 (Balanced primes)". OEIS Foundation. https://oeis.org/A006562. 
  2. ↑ Sloane, N. J. A., ed. "Sequence A000928 (Irregular primes)". OEIS Foundation. https://oeis.org/A000928. 
  3. ↑ Sloane, N. J. A., ed. "Sequence A104272 (Ramanujan primes)". OEIS Foundation. https://oeis.org/A104272. 
  4. ↑ "Sloane's A109611 : Chen primes". OEIS Foundation. https://oeis.org/A109611. 
  5. ↑ Sloane, N. J. A., ed. "Sequence A005385 (Safe primes)". OEIS Foundation. https://oeis.org/A005385. 
  6. ↑ "Sloane's A007770 : Happy numbers". OEIS Foundation. https://oeis.org/A007770. 



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