Compare 1931 vs 2011
| Property | 1931 | 2011 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 19311 | 20111 |
| Prime factorization | 1931 | 2011 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1931 | 1, 2011 |
| Number of properties | 5 | 4 |
| Chen primes | 182nd | |
| Harmonic primes | 108th | 113th |
| Isolated primes | 184th | |
| Primes | 294th | 305th |
| Sexy primes (1st member) | 130th | |
| Sophie germain primes | 59th | |
| Twin primes (1st member) | 59th | |
| Roman numberals | MCMXXXI | MMXI |
| Base 2 | 111100010112 | 111110110112 |
| Base 3 | 21221123 | 22021113 |
| Base 4 | 1320234 | 1331234 |
| Base 5 | 302115 | 310215 |
| Base 6 | 125356 | 131516 |
| Base 7 | 54267 | 56027 |
| Base 8 | 36138 | 37338 |
| Base 9 | 25759 | 26749 |
| Base 10 | 193110 | 201110 |
| Base 11 | 14a611 | 156911 |
| Base 12 | 114b12 | 11b712 |
| Base 13 | b5713 | bb913 |
| Base 14 | 9bd14 | a3914 |
| Base 15 | 88b15 | 8e115 |
| Base 16 | 78b16 | 7db16 |