Compare 648643 vs 648649
| Property | 648643 | 648649 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 291 × 223671 | 6486491 |
| Prime factorization | 29 × 22367 | 648649 |
| Divisors count | 4 | 2 |
| Divisors | 1, 29, 22367, 648643 | 1, 648649 |
| Number of properties | 1 | 5 |
| Additive primes | 20602nd | |
| Chen primes | 20620th | |
| Cousin primes (1st member) | 5689th | |
| Isolated primes | 41328th | |
| Primes | 52723rd | |
| Semiprimes | 138895th | |
| Roman numberals | ||
| Base 2 | 100111100101110000112 | 100111100101110010012 |
| Base 3 | 10122212022113 | 10122212100013 |
| Base 4 | 21321130034 | 21321130214 |
| Base 5 | 1312240335 | 1312240445 |
| Base 6 | 215225516 | 215230016 |
| Base 7 | 53410427 | 53410517 |
| Base 8 | 23627038 | 23627118 |
| Base 9 | 11876849 | 11877019 |
| Base 10 | 64864310 | 64864910 |
| Base 11 | 40337611 | 40338111 |
| Base 12 | 27345712 | 27346112 |
| Base 13 | 19931813 | 19932113 |
| Base 14 | 12c55914 | 12c56114 |
| Base 15 | cc2cd15 | cc2d415 |
| Base 16 | 9e5c316 | 9e5c916 |