Compare 61981 vs 61991
| Property | 61981 | 61991 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 619811 | 619911 |
| Prime factorization | 61981 | 61991 |
| Divisors count | 2 | 2 |
| Divisors | 1, 61981 | 1, 61991 |
| Number of properties | 4 | 5 |
| Chen primes | 2860th | |
| Cousin primes (2nd member) | 826th | |
| Isolated primes | 4579th | |
| Primes | 6230th | 6232nd |
| Pythagorean primes | 3107th | |
| Sexy primes (1st member) | 1675th | |
| Sophie germain primes | 796th | |
| Twin primes (2nd member) | 827th | |
| Roman numberals | ||
| Base 2 | 11110010000111012 | 11110010001001112 |
| Base 3 | 100110001213 | 100110002223 |
| Base 4 | 330201314 | 330202134 |
| Base 5 | 34404115 | 34404315 |
| Base 6 | 11545416 | 11545556 |
| Base 7 | 3454637 | 3455067 |
| Base 8 | 1710358 | 1710478 |
| Base 9 | 1040179 | 1040289 |
| Base 10 | 6198110 | 6199110 |
| Base 11 | 4262711 | 4263611 |
| Base 12 | 2ba5112 | 2ba5b12 |
| Base 13 | 2229a13 | 222a713 |
| Base 14 | 1883314 | 1883d14 |
| Base 15 | 1357115 | 1357b15 |
| Base 16 | f21d16 | f22716 |