Compare 8157 vs 8161
| Property | 8157 | 8161 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 31 × 27191 | 81611 |
| Prime factorization | 3 × 2719 | 8161 |
| Divisors count | 4 | 2 |
| Divisors | 1, 3, 2719, 8157 | 1, 8161 |
| Number of properties | 1 | 7 |
| Good primes | 151st | |
| Isolated primes | 671st | |
| Lucky primes | 185th | |
| Primes | 1024th | |
| Pythagorean primes | 509th | |
| Semiprimes | 2178th | |
| Sexy primes (1st member) | 351st | |
| Solinas primes | 75th | |
| Roman numberals | ||
| Base 2 | 11111110111012 | 11111111000012 |
| Base 3 | 1020120103 | 1020120213 |
| Base 4 | 13331314 | 13332014 |
| Base 5 | 2301125 | 2301215 |
| Base 6 | 1014336 | 1014416 |
| Base 7 | 325327 | 325367 |
| Base 8 | 177358 | 177418 |
| Base 9 | 121639 | 121679 |
| Base 10 | 815710 | 816110 |
| Base 11 | 614611 | 614a11 |
| Base 12 | 487912 | 488112 |
| Base 13 | 393613 | 393a13 |
| Base 14 | 2d8914 | 2d8d14 |
| Base 15 | 263c15 | 264115 |
| Base 16 | 1fdd16 | 1fe116 |