Compare 1243 vs 1249
| Property | 1243 | 1249 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 111 × 1131 | 12491 |
| Prime factorization | 11 × 113 | 1249 |
| Divisors count | 4 | 2 |
| Divisors | 1, 11, 113, 1243 | 1, 1249 |
| Number of properties | 1 | 5 |
| Emirps | 58th | |
| Isolated primes | 121st | |
| Lucky primes | 53rd | |
| Primes | 204th | |
| Pythagorean primes | 101st | |
| Semiprimes | 366th | |
| Roman numberals | MCCXLIII | MCCXLIX |
| Base 2 | 100110110112 | 100111000012 |
| Base 3 | 12010013 | 12010213 |
| Base 4 | 1031234 | 1032014 |
| Base 5 | 144335 | 144445 |
| Base 6 | 54316 | 54416 |
| Base 7 | 34247 | 34337 |
| Base 8 | 23338 | 23418 |
| Base 9 | 16319 | 16379 |
| Base 10 | 124310 | 124910 |
| Base 11 | a3011 | a3611 |
| Base 12 | 87712 | 88112 |
| Base 13 | 74813 | 75113 |
| Base 14 | 64b14 | 65314 |
| Base 15 | 57d15 | 58415 |
| Base 16 | 4db16 | 4e116 |