Compare 1787 vs 1931
| Property | 1787 | 1931 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 17871 | 19311 |
| Prime factorization | 1787 | 1931 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1787 | 1, 1931 |
| Number of properties | 7 | 5 |
| Additive primes | 148th | |
| Chen primes | 173rd | 182nd |
| Cousin primes (2nd member) | 61st | |
| Harmonic primes | 108th | |
| Primes | 277th | 294th |
| Prime triplets (2nd member) | 45th | |
| Sophie germain primes | 59th | |
| Super primes | 59th | |
| Twin primes (1st member) | 56th | 59th |
| Roman numberals | MDCCLXXXVII | MCMXXXI |
| Base 2 | 110111110112 | 111100010112 |
| Base 3 | 21100123 | 21221123 |
| Base 4 | 1233234 | 1320234 |
| Base 5 | 241225 | 302115 |
| Base 6 | 121356 | 125356 |
| Base 7 | 51327 | 54267 |
| Base 8 | 33738 | 36138 |
| Base 9 | 24059 | 25759 |
| Base 10 | 178710 | 193110 |
| Base 11 | 138511 | 14a611 |
| Base 12 | 104b12 | 114b12 |
| Base 13 | a7613 | b5713 |
| Base 14 | 91914 | 9bd14 |
| Base 15 | 7e215 | 88b15 |
| Base 16 | 6fb16 | 78b16 |