Compare 661961 vs 661967
| Property | 661961 | 661967 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 6619611 | 371 × 178911 |
| Prime factorization | 661961 | 37 × 17891 |
| Divisors count | 2 | 4 |
| Divisors | 1, 661961 | 1, 37, 17891, 661967 |
| Number of properties | 4 | 1 |
| Additive primes | 20969th | |
| Isolated primes | 42126th | |
| Primes | 53715th | |
| Semiprimes | 141646th | |
| Sophie germain primes | 5462nd | |
| Roman numberals | ||
| Base 2 | 101000011001110010012 | 101000011001110011112 |
| Base 3 | 10201220010023 | 10201220010223 |
| Base 4 | 22012130214 | 22012130334 |
| Base 5 | 1321403215 | 1321403325 |
| Base 6 | 221043456 | 221043556 |
| Base 7 | 54246267 | 54246357 |
| Base 8 | 24147118 | 24147178 |
| Base 9 | 12180329 | 12180389 |
| Base 10 | 66196110 | 66196710 |
| Base 11 | 41238311 | 41238911 |
| Base 12 | 27b0b512 | 27b0bb12 |
| Base 13 | 1a23c113 | 1a23c713 |
| Base 14 | 13334d14 | 13335514 |
| Base 15 | d120b15 | d121215 |
| Base 16 | a19c916 | a19cf16 |