Compare 31991 vs 31991
| Property | 31991 | 31991 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 319911 | 319911 |
| Prime factorization | 31991 | 31991 |
| Divisors count | 2 | 2 |
| Divisors | 1, 31991 | 1, 31991 |
| Number of properties | 5 | 5 |
| Additive primes | 1554th | 1554th |
| Emirps | 698th | 698th |
| Isolated primes | 2451st | 2451st |
| Primes | 3432nd | 3432nd |
| Ulam primes | 263rd | 263rd |
| Roman numberals | ||
| Base 2 | 1111100111101112 | 1111100111101112 |
| Base 3 | 11212122123 | 11212122123 |
| Base 4 | 133033134 | 133033134 |
| Base 5 | 20104315 | 20104315 |
| Base 6 | 4040356 | 4040356 |
| Base 7 | 1621617 | 1621617 |
| Base 8 | 763678 | 763678 |
| Base 9 | 477859 | 477859 |
| Base 10 | 3199110 | 3199110 |
| Base 11 | 2204311 | 2204311 |
| Base 12 | 1661b12 | 1661b12 |
| Base 13 | 1173b13 | 1173b13 |
| Base 14 | b93114 | b93114 |
| Base 15 | 972b15 | 972b15 |
| Base 16 | 7cf716 | 7cf716 |