Compare 643991 vs 645149
| Property | 643991 | 645149 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6439911 | 6451491 |
| Prime factorization | 643991 | 645149 |
| Divisors count | 2 | 2 |
| Divisors | 1, 643991 | 1, 645149 |
| Number of properties | 3 | 5 |
| Additive primes | 20506th | |
| Chen primes | 20517th | |
| Isolated primes | 41043rd | 41122nd |
| Primes | 52360th | 52461st |
| Sophie germain primes | 5338th | 5350th |
| Roman numberals | ||
| Base 2 | 100111010011100101112 | 100111011000000111012 |
| Base 3 | 10122011011123 | 10122022221023 |
| Base 4 | 21310321134 | 21312001314 |
| Base 5 | 1311014315 | 1311210445 |
| Base 6 | 214452356 | 214544456 |
| Base 7 | 53213457 | 53246217 |
| Base 8 | 23516278 | 23540358 |
| Base 9 | 11813459 | 11828729 |
| Base 10 | 64399110 | 64514910 |
| Base 11 | 3aa92711 | 40078a11 |
| Base 12 | 27081b12 | 27142512 |
| Base 13 | 19717a13 | 19785b13 |
| Base 14 | 12a99514 | 12b18114 |
| Base 15 | cac2b15 | cb24e15 |
| Base 16 | 9d39716 | 9d81d16 |