Compare 640157 vs 640163
| Property | 640157 | 640163 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 71 × 1091 × 8391 | 6401631 |
| Prime factorization | 7 × 109 × 839 | 640163 |
| Divisors count | 8 | 2 |
| Divisors | 1, 7, 109, 763, 839, 5873, 91451, 640157 | 1, 640163 |
| Number of properties | 0 | 4 |
| Chen primes | 20385th | |
| Isolated primes | 40826th | |
| Primes | 52091st | |
| Safe primes | 3018th | |
| Roman numberals | ||
| Base 2 | 100111000100100111012 | 100111000100101000112 |
| Base 3 | 10121120101123 | 10121120102023 |
| Base 4 | 21301021314 | 21301022034 |
| Base 5 | 1304411125 | 1304411235 |
| Base 6 | 214154056 | 214154156 |
| Base 7 | 53042307 | 53042367 |
| Base 8 | 23422358 | 23422438 |
| Base 9 | 11751159 | 11751229 |
| Base 10 | 64015710 | 64016310 |
| Base 11 | 3a7a6111 | 3a7a6711 |
| Base 12 | 26a56512 | 26a56b12 |
| Base 13 | 1954bb13 | 1954c413 |
| Base 14 | 12941714 | 12941d14 |
| Base 15 | c9a2215 | c9a2815 |
| Base 16 | 9c49d16 | 9c4a316 |