193 (number)
193 (one hundred [and] ninety-three) is the natural number following 192 and preceding 194.
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| Cardinal | one hundred ninety-three | |||
| Ordinal | 193rd (one hundred ninety-third) | |||
| Factorization | prime | |||
| Prime | 44th | |||
| Divisors | 1, 193 | |||
| Greek numeral | ΡϞΓ´ | |||
| Roman numeral | CXCIII | |||
| Binary | 110000012 | |||
| Ternary | 210113 | |||
| Octal | 3018 | |||
| Duodecimal | 14112 | |||
| Hexadecimal | C116 | |||
In mathematics
193 is a prime number, and a Pierpont prime, implying that a 193-gon can be constructed using a compass, straightedge, and angle trisector.[1] It is the only odd prime known for which 2 is not a primitive root of .[2]
See also
References
- Sloane, N. J. A. (ed.). "Sequence A005109 (Class 1- (or Pierpont) primes: primes of the form 2^t*3^u + 1)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- E. Friedman, "What's Special About This Number Archived 2018-02-23 at the Wayback Machine" Accessed 2 January 2006 and again 15 August 2007.
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