Compare 1247 vs 1257
| Property | 1247 | 1257 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 291 × 431 | 31 × 4191 |
| Prime factorization | 29 × 43 | 3 × 419 |
| Divisors count | 4 | 4 |
| Divisors | 1, 29, 43, 1247 | 1, 3, 419, 1257 |
| Number of properties | 1 | 1 |
| Semiprimes | 367th | 370th |
| Roman numberals | MCCXLVII | MCCLVII |
| Base 2 | 100110111112 | 100111010012 |
| Base 3 | 12010123 | 12011203 |
| Base 4 | 1031334 | 1032214 |
| Base 5 | 144425 | 200125 |
| Base 6 | 54356 | 54536 |
| Base 7 | 34317 | 34447 |
| Base 8 | 23378 | 23518 |
| Base 9 | 16359 | 16469 |
| Base 10 | 124710 | 125710 |
| Base 11 | a3411 | a4311 |
| Base 12 | 87b12 | 88912 |
| Base 13 | 74c13 | 75913 |
| Base 14 | 65114 | 65b14 |
| Base 15 | 58215 | 58c15 |
| Base 16 | 4df16 | 4e916 |