Compare 1931 vs 1951
| Property | 1931 | 1951 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 19311 | 19511 |
| Prime factorization | 1931 | 1951 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1931 | 1, 1951 |
| Number of properties | 5 | 3 |
| Chen primes | 182nd | |
| Cuban primes 1 | 14th | |
| Harmonic primes | 108th | |
| Primes | 294th | 297th |
| Sophie germain primes | 59th | |
| Twin primes (1st member) | 59th | |
| Twin primes (2nd member) | 60th | |
| Roman numberals | MCMXXXI | MCMLI |
| Base 2 | 111100010112 | 111100111112 |
| Base 3 | 21221123 | 22000213 |
| Base 4 | 1320234 | 1321334 |
| Base 5 | 302115 | 303015 |
| Base 6 | 125356 | 130116 |
| Base 7 | 54267 | 54557 |
| Base 8 | 36138 | 36378 |
| Base 9 | 25759 | 26079 |
| Base 10 | 193110 | 195110 |
| Base 11 | 14a611 | 151411 |
| Base 12 | 114b12 | 116712 |
| Base 13 | b5713 | b7113 |
| Base 14 | 9bd14 | 9d514 |
| Base 15 | 88b15 | 8a115 |
| Base 16 | 78b16 | 79f16 |