Compare 61981 vs 61989
| Property | 61981 | 61989 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 619811 | 31 × 206631 |
| Prime factorization | 61981 | 3 × 20663 |
| Divisors count | 2 | 4 |
| Divisors | 1, 61981 | 1, 3, 20663, 61989 |
| Number of properties | 4 | 1 |
| Primes | 6230th | |
| Pythagorean primes | 3107th | |
| Semiprimes | 14829th | |
| Sexy primes (1st member) | 1675th | |
| Twin primes (2nd member) | 827th | |
| Roman numberals | ||
| Base 2 | 11110010000111012 | 11110010001001012 |
| Base 3 | 100110001213 | 100110002203 |
| Base 4 | 330201314 | 330202114 |
| Base 5 | 34404115 | 34404245 |
| Base 6 | 11545416 | 11545536 |
| Base 7 | 3454637 | 3455047 |
| Base 8 | 1710358 | 1710458 |
| Base 9 | 1040179 | 1040269 |
| Base 10 | 6198110 | 6198910 |
| Base 11 | 4262711 | 4263411 |
| Base 12 | 2ba5112 | 2ba5912 |
| Base 13 | 2229a13 | 222a513 |
| Base 14 | 1883314 | 1883b14 |
| Base 15 | 1357115 | 1357915 |
| Base 16 | f21d16 | f22516 |