Compare 1247 vs 1261
| Property | 1247 | 1261 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 291 × 431 | 131 × 971 |
| Prime factorization | 29 × 43 | 13 × 97 |
| Divisors count | 4 | 4 |
| Divisors | 1, 29, 43, 1247 | 1, 13, 97, 1261 |
| Number of properties | 1 | 1 |
| Semiprimes | 367th | 371st |
| Roman numberals | MCCXLVII | MCCLXI |
| Base 2 | 100110111112 | 100111011012 |
| Base 3 | 12010123 | 12012013 |
| Base 4 | 1031334 | 1032314 |
| Base 5 | 144425 | 200215 |
| Base 6 | 54356 | 55016 |
| Base 7 | 34317 | 34517 |
| Base 8 | 23378 | 23558 |
| Base 9 | 16359 | 16519 |
| Base 10 | 124710 | 126110 |
| Base 11 | a3411 | a4711 |
| Base 12 | 87b12 | 89112 |
| Base 13 | 74c13 | 76013 |
| Base 14 | 65114 | 66114 |
| Base 15 | 58215 | 59115 |
| Base 16 | 4df16 | 4ed16 |