Compare 1187 vs 1231
| Property | 1187 | 1231 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 11871 | 12311 |
| Prime factorization | 1187 | 1231 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1187 | 1, 1231 |
| Number of properties | 8 | 6 |
| Additive primes | 105th | 108th |
| Chen primes | 128th | |
| Emirps | 56th | |
| Isolated primes | 114th | |
| Lucky primes | 52nd | |
| Primes | 195th | 202nd |
| Safe primes | 27th | |
| Sexy primes (1st member) | 85th | 88th |
| Sexy primes (2nd member) | 84th | |
| Sexy prime triplets (2nd member) | 32nd | |
| Twin primes (2nd member) | 42nd | |
| Roman numberals | MCLXXXVII | MCCXXXI |
| Base 2 | 100101000112 | 100110011112 |
| Base 3 | 11212223 | 12001213 |
| Base 4 | 1022034 | 1030334 |
| Base 5 | 142225 | 144115 |
| Base 6 | 52556 | 54116 |
| Base 7 | 33147 | 34067 |
| Base 8 | 22438 | 23178 |
| Base 9 | 15589 | 16179 |
| Base 10 | 118710 | 123110 |
| Base 11 | 98a11 | a1a11 |
| Base 12 | 82b12 | 86712 |
| Base 13 | 70413 | 73913 |
| Base 14 | 60b14 | 63d14 |
| Base 15 | 54215 | 57115 |
| Base 16 | 4a316 | 4cf16 |