Compare 1987 vs 2251
| Property | 1987 | 2251 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 19871 | 22511 |
| Prime factorization | 1987 | 2251 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1987 | 1, 2251 |
| Number of properties | 6 | 6 |
| Chen primes | 204th | |
| Good primes | 62nd | |
| Harmonic primes | 122nd | |
| Isolated primes | 181st | 200th |
| Long primes | 130th | |
| Lucky primes | 70th | 76th |
| Primes | 300th | 335th |
| Sexy primes (1st member) | 127th | |
| Sexy prime triplets (1st member) | 50th | |
| Roman numberals | MCMLXXXVII | MMCCLI |
| Base 2 | 111110000112 | 1000110010112 |
| Base 3 | 22011213 | 100021013 |
| Base 4 | 1330034 | 2030234 |
| Base 5 | 304225 | 330015 |
| Base 6 | 131116 | 142316 |
| Base 7 | 55367 | 63647 |
| Base 8 | 37038 | 43138 |
| Base 9 | 26479 | 30719 |
| Base 10 | 198710 | 225110 |
| Base 11 | 154711 | 176711 |
| Base 12 | 119712 | 137712 |
| Base 13 | b9b13 | 104213 |
| Base 14 | a1d14 | b6b14 |
| Base 15 | 8c715 | a0115 |
| Base 16 | 7c316 | 8cb16 |