Compare 1987 vs 2011
| Property | 1987 | 2011 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 19871 | 20111 |
| Prime factorization | 1987 | 2011 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1987 | 1, 2011 |
| Number of properties | 6 | 4 |
| Good primes | 62nd | |
| Harmonic primes | 113th | |
| Isolated primes | 181st | 184th |
| Lucky primes | 70th | |
| Primes | 300th | 305th |
| Sexy primes (1st member) | 127th | 130th |
| Sexy prime triplets (1st member) | 50th | |
| Roman numberals | MCMLXXXVII | MMXI |
| Base 2 | 111110000112 | 111110110112 |
| Base 3 | 22011213 | 22021113 |
| Base 4 | 1330034 | 1331234 |
| Base 5 | 304225 | 310215 |
| Base 6 | 131116 | 131516 |
| Base 7 | 55367 | 56027 |
| Base 8 | 37038 | 37338 |
| Base 9 | 26479 | 26749 |
| Base 10 | 198710 | 201110 |
| Base 11 | 154711 | 156911 |
| Base 12 | 119712 | 11b712 |
| Base 13 | b9b13 | bb913 |
| Base 14 | a1d14 | a3914 |
| Base 15 | 8c715 | 8e115 |
| Base 16 | 7c316 | 7db16 |