Compare 1931 vs 1938
| Property | 1931 | 1938 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 4 |
| Total factors | 1 | 4 |
| Prime factorization | 19311 | 21 × 31 × 171 × 191 |
| Prime factorization | 1931 | 2 × 3 × 17 × 19 |
| Divisors count | 2 | 16 |
| Divisors | 1, 1931 | 1, 2, 3, 6, 17, 19, 34, 38, 51, 57, 102, 114, 323, 646, 969, 1938 |
| Number of properties | 5 | 0 |
| Chen primes | 182nd | |
| Harmonic primes | 108th | |
| Primes | 294th | |
| Sophie germain primes | 59th | |
| Twin primes (1st member) | 59th | |
| Roman numberals | MCMXXXI | MCMXXXVIII |
| Base 2 | 111100010112 | 111100100102 |
| Base 3 | 21221123 | 21222103 |
| Base 4 | 1320234 | 1321024 |
| Base 5 | 302115 | 302235 |
| Base 6 | 125356 | 125506 |
| Base 7 | 54267 | 54367 |
| Base 8 | 36138 | 36228 |
| Base 9 | 25759 | 25839 |
| Base 10 | 193110 | 193810 |
| Base 11 | 14a611 | 150211 |
| Base 12 | 114b12 | 115612 |
| Base 13 | b5713 | b6113 |
| Base 14 | 9bd14 | 9c614 |
| Base 15 | 88b15 | 89315 |
| Base 16 | 78b16 | 79216 |