| ||||
---|---|---|---|---|
Cardinal | one hundred eighty-three | |||
Ordinal | 183rd (one hundred eighty-third) | |||
Factorization | 3 × 61 | |||
Divisors | 1, 3, 61, 183 | |||
Greek numeral | ΡΠΓ´ | |||
Roman numeral | CLXXXIII | |||
Binary | 101101112 | |||
Ternary | 202103 | |||
Senary | 5036 | |||
Octal | 2678 | |||
Duodecimal | 13312 | |||
Hexadecimal | B716 |
183 (one hundred [and] eighty-three) is the natural number following 182 and preceding 184.
In mathematics
183 is a perfect totient number, a number that is equal to the sum of its iterated totients.[1]
Because , it is the number of points in a projective plane over the finite field .[2] 183 is the fourth element of a divisibility sequence in which the th number can be computed as for a transcendental number .[3][4] This sequence counts the number of trees of height in which each node can have at most two children.[3][5]
There are 183 different semiorders on four labeled elements.[6]
See also
- The year AD 183 or 183 BC
- List of highways numbered 183
- All pages with titles containing 183
References
- ^ Sloane, N. J. A. (ed.). "Sequence A082897 (Perfect totient numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ Sloane, N. J. A. (ed.). "Sequence A002061 (Central polygonal numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ a b Sloane, N. J. A. (ed.). "Sequence A002065". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ Dubickas, Artūras (2022). "Transcendency of some constants related to integer sequences of polynomial iterations". Ramanujan Journal. 57 (2): 569–581. doi:10.1007/s11139-021-00428-5. MR 4372232. S2CID 236289092.
- ^ Kalman, Stan C.; Kwasny, Barry L. (January 1995). "Tail-recursive distributed representations and simple recurrent networks". Connection Science. 7 (1): 61–80. doi:10.1080/09540099508915657.
- ^ Sloane, N. J. A. (ed.). "Sequence A006531 (Semiorders on n elements)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.