Compare 639667 vs 639679
| Property | 639667 | 639679 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 71 × 913811 | 6396791 |
| Prime factorization | 7 × 91381 | 639679 |
| Divisors count | 4 | 2 |
| Divisors | 1, 7, 91381, 639667 | 1, 639679 |
| Number of properties | 1 | 2 |
| Primes | 52052nd | |
| Semiprimes | 137072nd | |
| Twin primes (2nd member) | 5629th | |
| Roman numberals | ||
| Base 2 | 100111000010101100112 | 100111000010101111112 |
| Base 3 | 10121111101013 | 10121111102113 |
| Base 4 | 21300223034 | 21300223334 |
| Base 5 | 1304321325 | 1304322045 |
| Base 6 | 214132316 | 214132516 |
| Base 7 | 53026307 | 53026457 |
| Base 8 | 23412638 | 23412778 |
| Base 9 | 11744119 | 11744249 |
| Base 10 | 63966710 | 63967910 |
| Base 11 | 3a765611 | 3a766711 |
| Base 12 | 26a21712 | 26a22712 |
| Base 13 | 19520213 | 19521113 |
| Base 14 | 12918714 | 12919514 |
| Base 15 | c97e715 | c980415 |
| Base 16 | 9c2b316 | 9c2bf16 |