Compare 661897 vs 661961
| Property | 661897 | 661961 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6618971 | 6619611 |
| Prime factorization | 661897 | 661961 |
| Divisors count | 2 | 2 |
| Divisors | 1, 661897 | 1, 661961 |
| Number of properties | 3 | 4 |
| Additive primes | 20967th | 20969th |
| Isolated primes | 42122nd | 42126th |
| Primes | 53709th | 53715th |
| Sophie germain primes | 5462nd | |
| Roman numberals | ||
| Base 2 | 101000011001100010012 | 101000011001110010012 |
| Base 3 | 10201212212013 | 10201220010023 |
| Base 4 | 22012120214 | 22012130214 |
| Base 5 | 1321400425 | 1321403215 |
| Base 6 | 221042016 | 221043456 |
| Base 7 | 54245057 | 54246267 |
| Base 8 | 24146118 | 24147118 |
| Base 9 | 12178519 | 12180329 |
| Base 10 | 66189710 | 66196110 |
| Base 11 | 41232511 | 41238311 |
| Base 12 | 27b06112 | 27b0b512 |
| Base 13 | 1a237213 | 1a23c113 |
| Base 14 | 13330514 | 13334d14 |
| Base 15 | d11b715 | d120b15 |
| Base 16 | a198916 | a19c916 |