233 (number)
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|---|---|---|---|---|
| Cardinal | two hundred thirty-three | |||
| Ordinal | 233rd (two hundred and thirty-third) |
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| Factorization | 233 | |||
| Prime | yes | |||
| Roman numeral | CCXXXIII | |||
| Binary | 111010012 | |||
| Ternary | 221223 | |||
| Quaternary | 32214 | |||
| Quinary | 14135 | |||
| Senary | 10256 | |||
| Octal | 3518 | |||
| Duodecimal | 17512 | |||
| Hexadecimal | E916 | |||
| Vigesimal | BD20 | |||
| Base 36 | 6H36 | |||
233 is the natural number between 232 and 234.
233 is a prime number,[1] 233 is the international dialing code Ghana a Sophie Germain prime,[2] a Pillai prime,[3] and a Ramanujan prime.[4] It is a Fibonacci number,[5] one of the Fibonacci primes.[6]
There are exactly 233 maximal planar graphs with ten vertices,[7] and 233 connected topological spaces with four points.[8]
Informal Use
233 is usually referred by Chinese people as laugh out loud, which is a reference to the 233rd emoji of a famous Chinese forum. The number of 3's can be indefinitely extended (for example, 23333 would have the same or slightly stronger effect as 2333).
References
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- ↑ "Sloane's A000040 : The prime numbers", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ↑ "Sloane's A005384 : Sophie Germain primes p: 2p+1 is also prime", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ↑ "Sloane's A063980 : Pillai 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 A000045 : Fibonacci numbers", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ↑ "Sloane's A005478 : Prime Fibonacci numbers", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ↑ "Sloane's A000109 : Number of simplicial polyhedra with n nodes", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ↑ "Sloane's A001929 : Number of connected topologies on n labeled points", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
