Compare 31979 vs 31991
| Property | 31979 | 31991 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 1131 × 2831 | 319911 |
| Prime factorization | 113 × 283 | 31991 |
| Divisors count | 4 | 2 |
| Divisors | 1, 113, 283, 31979 | 1, 31991 |
| Number of properties | 1 | 5 |
| Additive primes | 1554th | |
| Emirps | 698th | |
| Isolated primes | 2451st | |
| Primes | 3432nd | |
| Semiprimes | 7943rd | |
| Ulam primes | 263rd | |
| Roman numberals | ||
| Base 2 | 1111100111010112 | 1111100111101112 |
| Base 3 | 11212121023 | 11212122123 |
| Base 4 | 133032234 | 133033134 |
| Base 5 | 20104045 | 20104315 |
| Base 6 | 4040156 | 4040356 |
| Base 7 | 1621437 | 1621617 |
| Base 8 | 763538 | 763678 |
| Base 9 | 477729 | 477859 |
| Base 10 | 3197910 | 3199110 |
| Base 11 | 2203211 | 2204311 |
| Base 12 | 1660b12 | 1661b12 |
| Base 13 | 1172c13 | 1173b13 |
| Base 14 | b92314 | b93114 |
| Base 15 | 971e15 | 972b15 |
| Base 16 | 7ceb16 | 7cf716 |