Compare 640154 vs 640163
| Property | 640154 | 640163 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 21 × 3311 × 9671 | 6401631 |
| Prime factorization | 2 × 331 × 967 | 640163 |
| Divisors count | 8 | 2 |
| Divisors | 1, 2, 331, 662, 967, 1934, 320077, 640154 | 1, 640163 |
| Number of properties | 0 | 4 |
| Chen primes | 20385th | |
| Isolated primes | 40826th | |
| Primes | 52091st | |
| Safe primes | 3018th | |
| Roman numberals | ||
| Base 2 | 100111000100100110102 | 100111000100101000112 |
| Base 3 | 10121120101023 | 10121120102023 |
| Base 4 | 21301021224 | 21301022034 |
| Base 5 | 1304411045 | 1304411235 |
| Base 6 | 214154026 | 214154156 |
| Base 7 | 53042247 | 53042367 |
| Base 8 | 23422328 | 23422438 |
| Base 9 | 11751129 | 11751229 |
| Base 10 | 64015410 | 64016310 |
| Base 11 | 3a7a5911 | 3a7a6711 |
| Base 12 | 26a56212 | 26a56b12 |
| Base 13 | 1954b813 | 1954c413 |
| Base 14 | 12941414 | 12941d14 |
| Base 15 | c9a1e15 | c9a2815 |
| Base 16 | 9c49a16 | 9c4a316 |