Compare 648640 vs 648649
| Property | 648640 | 648649 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 8 | 1 |
| Prime factorization | 26 × 51 × 20271 | 6486491 |
| Prime factorization | 2 × 2 × 2 × 2 × 2 × 2 × 5 × 2027 | 648649 |
| Divisors count | 28 | 2 |
| Divisors | 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 2027, 4054, 8108, 10135, 16216, 20270, 32432, 40540, 64864, 81080, 129728, 162160, 324320, 648640 | 1, 648649 |
| Number of properties | 0 | 5 |
| Additive primes | 20602nd | |
| Chen primes | 20620th | |
| Cousin primes (1st member) | 5689th | |
| Isolated primes | 41328th | |
| Primes | 52723rd | |
| Roman numberals | ||
| Base 2 | 100111100101110000002 | 100111100101110010012 |
| Base 3 | 10122212022013 | 10122212100013 |
| Base 4 | 21321130004 | 21321130214 |
| Base 5 | 1312240305 | 1312240445 |
| Base 6 | 215225446 | 215230016 |
| Base 7 | 53410367 | 53410517 |
| Base 8 | 23627008 | 23627118 |
| Base 9 | 11876819 | 11877019 |
| Base 10 | 64864010 | 64864910 |
| Base 11 | 40337311 | 40338111 |
| Base 12 | 27345412 | 27346112 |
| Base 13 | 19931513 | 19932113 |
| Base 14 | 12c55614 | 12c56114 |
| Base 15 | cc2ca15 | cc2d415 |
| Base 16 | 9e5c016 | 9e5c916 |