Compare 1231 vs 1238
| Property | 1231 | 1238 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 12311 | 21 × 6191 |
| Prime factorization | 1231 | 2 × 619 |
| Divisors count | 2 | 4 |
| Divisors | 1, 1231 | 1, 2, 619, 1238 |
| Number of properties | 6 | 1 |
| Additive primes | 108th | |
| Emirps | 56th | |
| Lucky primes | 52nd | |
| Primes | 202nd | |
| Semiprimes | 364th | |
| Sexy primes (1st member) | 88th | |
| Twin primes (2nd member) | 42nd | |
| Roman numberals | MCCXXXI | MCCXXXVIII |
| Base 2 | 100110011112 | 100110101102 |
| Base 3 | 12001213 | 12002123 |
| Base 4 | 1030334 | 1031124 |
| Base 5 | 144115 | 144235 |
| Base 6 | 54116 | 54226 |
| Base 7 | 34067 | 34167 |
| Base 8 | 23178 | 23268 |
| Base 9 | 16179 | 16259 |
| Base 10 | 123110 | 123810 |
| Base 11 | a1a11 | a2611 |
| Base 12 | 86712 | 87212 |
| Base 13 | 73913 | 74313 |
| Base 14 | 63d14 | 64614 |
| Base 15 | 57115 | 57815 |
| Base 16 | 4cf16 | 4d616 |