Compare 1237 vs 1243
| Property | 1237 | 1243 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 12371 | 111 × 1131 |
| Prime factorization | 1237 | 11 × 113 |
| Divisors count | 2 | 4 |
| Divisors | 1, 1237 | 1, 11, 113, 1243 |
| Number of properties | 7 | 1 |
| Additive primes | 109th | |
| Emirps | 57th | |
| Harmonic primes | 71st | |
| Isolated primes | 120th | |
| Primes | 203rd | |
| Pythagorean primes | 100th | |
| Semiprimes | 366th | |
| Sexy primes (2nd member) | 88th | |
| Roman numberals | MCCXXXVII | MCCXLIII |
| Base 2 | 100110101012 | 100110110112 |
| Base 3 | 12002113 | 12010013 |
| Base 4 | 1031114 | 1031234 |
| Base 5 | 144225 | 144335 |
| Base 6 | 54216 | 54316 |
| Base 7 | 34157 | 34247 |
| Base 8 | 23258 | 23338 |
| Base 9 | 16249 | 16319 |
| Base 10 | 123710 | 124310 |
| Base 11 | a2511 | a3011 |
| Base 12 | 87112 | 87712 |
| Base 13 | 74213 | 74813 |
| Base 14 | 64514 | 64b14 |
| Base 15 | 57715 | 57d15 |
| Base 16 | 4d516 | 4db16 |