Compare 640162 vs 640163
| Property | 640162 | 640163 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 21 × 3200811 | 6401631 |
| Prime factorization | 2 × 320081 | 640163 |
| Divisors count | 4 | 2 |
| Divisors | 1, 2, 320081, 640162 | 1, 640163 |
| Number of properties | 1 | 4 |
| Chen primes | 20385th | |
| Isolated primes | 40826th | |
| Primes | 52091st | |
| Safe primes | 3018th | |
| Semiprimes | 137174th | |
| Roman numberals | ||
| Base 2 | 100111000100101000102 | 100111000100101000112 |
| Base 3 | 10121120102013 | 10121120102023 |
| Base 4 | 21301022024 | 21301022034 |
| Base 5 | 1304411225 | 1304411235 |
| Base 6 | 214154146 | 214154156 |
| Base 7 | 53042357 | 53042367 |
| Base 8 | 23422428 | 23422438 |
| Base 9 | 11751219 | 11751229 |
| Base 10 | 64016210 | 64016310 |
| Base 11 | 3a7a6611 | 3a7a6711 |
| Base 12 | 26a56a12 | 26a56b12 |
| Base 13 | 1954c313 | 1954c413 |
| Base 14 | 12941c14 | 12941d14 |
| Base 15 | c9a2715 | c9a2815 |
| Base 16 | 9c4a216 | 9c4a316 |