Compare 639987 vs 640031
| Property | 639987 | 640031 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 31 × 2133291 | 71 × 914331 |
| Prime factorization | 3 × 213329 | 7 × 91433 |
| Divisors count | 4 | 4 |
| Divisors | 1, 3, 213329, 639987 | 1, 7, 91433, 640031 |
| Number of properties | 1 | 1 |
| Semiprimes | 137145th | 137150th |
| Roman numberals | ||
| Base 2 | 100111000011111100112 | 100111000100000111112 |
| Base 3 | 10121112200203 | 10121112212123 |
| Base 4 | 21300333034 | 21301001334 |
| Base 5 | 1304344225 | 1304401115 |
| Base 6 | 214145236 | 214150356 |
| Base 7 | 53035657 | 53036607 |
| Base 8 | 23417638 | 23420378 |
| Base 9 | 11748069 | 11748559 |
| Base 10 | 63998710 | 64003110 |
| Base 11 | 3a791711 | 3a795711 |
| Base 12 | 26a44312 | 26a47b12 |
| Base 13 | 1953ba13 | 19542213 |
| Base 14 | 12933514 | 12936714 |
| Base 15 | c995c15 | c998b15 |
| Base 16 | 9c3f316 | 9c41f16 |