Compare 1931 vs 2017
| Property | 1931 | 2017 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 19311 | 20171 |
| Prime factorization | 1931 | 2017 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1931 | 1, 2017 |
| Number of properties | 5 | 7 |
| Chen primes | 182nd | 187th |
| Harmonic primes | 108th | |
| Isolated primes | 185th | |
| Long primes | 117th | |
| Primes | 294th | 306th |
| Pythagorean primes | 148th | |
| Sexy primes (2nd member) | 130th | |
| Solinas primes | 54th | |
| Sophie germain primes | 59th | |
| Twin primes (1st member) | 59th | |
| Roman numberals | MCMXXXI | MMXVII |
| Base 2 | 111100010112 | 111111000012 |
| Base 3 | 21221123 | 22022013 |
| Base 4 | 1320234 | 1332014 |
| Base 5 | 302115 | 310325 |
| Base 6 | 125356 | 132016 |
| Base 7 | 54267 | 56117 |
| Base 8 | 36138 | 37418 |
| Base 9 | 25759 | 26819 |
| Base 10 | 193110 | 201710 |
| Base 11 | 14a611 | 157411 |
| Base 12 | 114b12 | 120112 |
| Base 13 | b5713 | bc213 |
| Base 14 | 9bd14 | a4114 |
| Base 15 | 88b15 | 8e715 |
| Base 16 | 78b16 | 7e116 |