Compare 1931 vs 1942
| Property | 1931 | 1942 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 19311 | 21 × 9711 |
| Prime factorization | 1931 | 2 × 971 |
| Divisors count | 2 | 4 |
| Divisors | 1, 1931 | 1, 2, 971, 1942 |
| Number of properties | 5 | 1 |
| Chen primes | 182nd | |
| Harmonic primes | 108th | |
| Primes | 294th | |
| Semiprimes | 560th | |
| Sophie germain primes | 59th | |
| Twin primes (1st member) | 59th | |
| Roman numberals | MCMXXXI | MCMXLII |
| Base 2 | 111100010112 | 111100101102 |
| Base 3 | 21221123 | 21222213 |
| Base 4 | 1320234 | 1321124 |
| Base 5 | 302115 | 302325 |
| Base 6 | 125356 | 125546 |
| Base 7 | 54267 | 54437 |
| Base 8 | 36138 | 36268 |
| Base 9 | 25759 | 25879 |
| Base 10 | 193110 | 194210 |
| Base 11 | 14a611 | 150611 |
| Base 12 | 114b12 | 115a12 |
| Base 13 | b5713 | b6513 |
| Base 14 | 9bd14 | 9ca14 |
| Base 15 | 88b15 | 89715 |
| Base 16 | 78b16 | 79616 |