172 (number)
| ||||
|---|---|---|---|---|
| Cardinal | one hundred seventy-two | |||
| Ordinal | 172nd (one hundred seventy-second) | |||
| Factorization | 22 × 43 | |||
| Divisors | 1, 2, 4, 43, 86, 172 | |||
| Greek numeral | ΡΟΒ´ | |||
| Roman numeral | CLXXII | |||
| Binary | 101011002 | |||
| Ternary | 201013 | |||
| Senary | 4446 | |||
| Octal | 2548 | |||
| Duodecimal | 12412 | |||
| Hexadecimal | AC16 | |||
172 (one hundred [and] seventy-two) is the natural number following 171 and preceding 173.
In mathematics
172 is a part of a near-miss for being a counterexample to Fermat's last theorem, as 1353 + 1383 = 1723 − 1. This is only the third near-miss of this form, two cubes adding to one less than a third cube.[1] It is also a "thickened cube number", half an odd cube (73 = 343) rounded up to the next integer.[2]
See also
References
- ^ Sloane, N. J. A. (ed.). "Sequence A050787". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ Sloane, N. J. A. (ed.). "Sequence A050492 (Thickened cube numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.