Compare 640984 vs 640991
| Property | 640984 | 640991 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 5 | 2 |
| Prime factorization | 23 × 191 × 42171 | 131 × 493071 |
| Prime factorization | 2 × 2 × 2 × 19 × 4217 | 13 × 49307 |
| Divisors count | 16 | 4 |
| Divisors | 1, 2, 4, 8, 19, 38, 76, 152, 4217, 8434, 16868, 33736, 80123, 160246, 320492, 640984 | 1, 13, 49307, 640991 |
| Number of properties | 0 | 1 |
| Semiprimes | 137347th | |
| Roman numberals | ||
| Base 2 | 100111000111110110002 | 100111000111110111112 |
| Base 3 | 10121200210113 | 10121200211023 |
| Base 4 | 21301331204 | 21301331334 |
| Base 5 | 1310024145 | 1310024315 |
| Base 6 | 214233046 | 214233156 |
| Base 7 | 53065217 | 53065317 |
| Base 8 | 23437308 | 23437378 |
| Base 9 | 11762349 | 11762429 |
| Base 10 | 64098410 | 64099110 |
| Base 11 | 3a864311 | 3a864a11 |
| Base 12 | 26ab3412 | 26ab3b12 |
| Base 13 | 1959a613 | 1959b013 |
| Base 14 | 12984814 | 12985114 |
| Base 15 | c9dc415 | c9dcb15 |
| Base 16 | 9c7d816 | 9c7df16 |