Compare 639664 vs 639669
| Property | 639664 | 639669 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 5 | 2 |
| Prime factorization | 24 × 399791 | 31 × 2132231 |
| Prime factorization | 2 × 2 × 2 × 2 × 39979 | 3 × 213223 |
| Divisors count | 10 | 4 |
| Divisors | 1, 2, 4, 8, 16, 39979, 79958, 159916, 319832, 639664 | 1, 3, 213223, 639669 |
| Number of properties | 0 | 1 |
| Semiprimes | 137073rd | |
| Roman numberals | ||
| Base 2 | 100111000010101100002 | 100111000010101101012 |
| Base 3 | 10121111100213 | 10121111101103 |
| Base 4 | 21300223004 | 21300223114 |
| Base 5 | 1304321245 | 1304321345 |
| Base 6 | 214132246 | 214132336 |
| Base 7 | 53026247 | 53026327 |
| Base 8 | 23412608 | 23412658 |
| Base 9 | 11744079 | 11744139 |
| Base 10 | 63966410 | 63966910 |
| Base 11 | 3a765311 | 3a765811 |
| Base 12 | 26a21412 | 26a21912 |
| Base 13 | 1951cc13 | 19520413 |
| Base 14 | 12918414 | 12918914 |
| Base 15 | c97e415 | c97e915 |
| Base 16 | 9c2b016 | 9c2b516 |