Compare 681983 vs 681991
| Property | 681983 | 681991 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 6819831 | 2331 × 29271 |
| Prime factorization | 681983 | 233 × 2927 |
| Divisors count | 2 | 4 |
| Divisors | 1, 681983 | 1, 233, 2927, 681991 |
| Number of properties | 7 | 1 |
| Chen primes | 21554th | |
| Cousin primes (2nd member) | 5952nd | |
| Isolated primes | 43316th | |
| Primes | 55215th | |
| Prime triplets (3rd member) | 2167th | |
| Semiprimes | 145708th | |
| Sexy primes (2nd member) | 11876th | |
| Sexy prime triplets (3rd member) | 2163rd | |
| Roman numberals | ||
| Base 2 | 101001100111111111112 | 101001101000000001112 |
| Base 3 | 10211221111223 | 10211221112213 |
| Base 4 | 22121333334 | 22122000134 |
| Base 5 | 1333104135 | 1333104315 |
| Base 6 | 223411556 | 223412116 |
| Base 7 | 55402017 | 55402127 |
| Base 8 | 24637778 | 24640078 |
| Base 9 | 12484489 | 12484579 |
| Base 10 | 68198310 | 68199110 |
| Base 11 | 42642511 | 42643211 |
| Base 12 | 28a7bb12 | 28a80712 |
| Base 13 | 1ab55313 | 1ab55b13 |
| Base 14 | 13a77114 | 13a77914 |
| Base 15 | d710815 | d711115 |
| Base 16 | a67ff16 | a680716 |