Compare 331 vs 1951
| Property | 331 | 1951 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 3311 | 19511 |
| Prime factorization | 331 | 1951 |
| Divisors count | 2 | 2 |
| Divisors | 1, 331 | 1, 1951 |
| Number of properties | 10 | 3 |
| Additive primes | 39th | |
| Cuban primes 1 | 7th | 14th |
| Good primes | 24th | |
| Happy primes | 17th | |
| Harmonic primes | 28th | |
| Isolated primes | 28th | |
| Lucky primes | 19th | |
| Primes | 67th | 297th |
| Sexy primes (1st member) | 37th | |
| Super primes | 19th | |
| Twin primes (2nd member) | 60th | |
| Roman numberals | CCCXXXI | MCMLI |
| Base 2 | 1010010112 | 111100111112 |
| Base 3 | 1100213 | 22000213 |
| Base 4 | 110234 | 1321334 |
| Base 5 | 23115 | 303015 |
| Base 6 | 13116 | 130116 |
| Base 7 | 6527 | 54557 |
| Base 8 | 5138 | 36378 |
| Base 9 | 4079 | 26079 |
| Base 10 | 33110 | 195110 |
| Base 11 | 28111 | 151411 |
| Base 12 | 23712 | 116712 |
| Base 13 | 1c613 | b7113 |
| Base 14 | 19914 | 9d514 |
| Base 15 | 17115 | 8a115 |
| Base 16 | 14b16 | 79f16 |