Compare 1387 vs 1405
| Property | 1387 | 1405 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 191 × 731 | 51 × 2811 |
| Prime factorization | 19 × 73 | 5 × 281 |
| Divisors count | 4 | 4 |
| Divisors | 1, 19, 73, 1387 | 1, 5, 281, 1405 |
| Number of properties | 1 | 1 |
| Semiprimes | 410th | 418th |
| Roman numberals | MCCCLXXXVII | MCDV |
| Base 2 | 101011010112 | 101011111012 |
| Base 3 | 12201013 | 12210013 |
| Base 4 | 1112234 | 1113314 |
| Base 5 | 210225 | 211105 |
| Base 6 | 102316 | 103016 |
| Base 7 | 40217 | 40457 |
| Base 8 | 25538 | 25758 |
| Base 9 | 18119 | 18319 |
| Base 10 | 138710 | 140510 |
| Base 11 | 105111 | 106811 |
| Base 12 | 97712 | 99112 |
| Base 13 | 82913 | 84113 |
| Base 14 | 71114 | 72514 |
| Base 15 | 62715 | 63a15 |
| Base 16 | 56b16 | 57d16 |