Compare 1249 vs 1261
| Property | 1249 | 1261 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 12491 | 131 × 971 |
| Prime factorization | 1249 | 13 × 97 |
| Divisors count | 2 | 4 |
| Divisors | 1, 1249 | 1, 13, 97, 1261 |
| Number of properties | 5 | 1 |
| Emirps | 58th | |
| Isolated primes | 121st | |
| Lucky primes | 53rd | |
| Primes | 204th | |
| Pythagorean primes | 101st | |
| Semiprimes | 371st | |
| Roman numberals | MCCXLIX | MCCLXI |
| Base 2 | 100111000012 | 100111011012 |
| Base 3 | 12010213 | 12012013 |
| Base 4 | 1032014 | 1032314 |
| Base 5 | 144445 | 200215 |
| Base 6 | 54416 | 55016 |
| Base 7 | 34337 | 34517 |
| Base 8 | 23418 | 23558 |
| Base 9 | 16379 | 16519 |
| Base 10 | 124910 | 126110 |
| Base 11 | a3611 | a4711 |
| Base 12 | 88112 | 89112 |
| Base 13 | 75113 | 76013 |
| Base 14 | 65314 | 66114 |
| Base 15 | 58415 | 59115 |
| Base 16 | 4e116 | 4ed16 |