Compare 1987 vs 2017
| Property | 1987 | 2017 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 19871 | 20171 |
| Prime factorization | 1987 | 2017 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1987 | 1, 2017 |
| Number of properties | 6 | 7 |
| Chen primes | 187th | |
| Good primes | 62nd | |
| Isolated primes | 181st | 185th |
| Long primes | 117th | |
| Lucky primes | 70th | |
| Primes | 300th | 306th |
| Pythagorean primes | 148th | |
| Sexy primes (1st member) | 127th | |
| Sexy primes (2nd member) | 130th | |
| Sexy prime triplets (1st member) | 50th | |
| Solinas primes | 54th | |
| Roman numberals | MCMLXXXVII | MMXVII |
| Base 2 | 111110000112 | 111111000012 |
| Base 3 | 22011213 | 22022013 |
| Base 4 | 1330034 | 1332014 |
| Base 5 | 304225 | 310325 |
| Base 6 | 131116 | 132016 |
| Base 7 | 55367 | 56117 |
| Base 8 | 37038 | 37418 |
| Base 9 | 26479 | 26819 |
| Base 10 | 198710 | 201710 |
| Base 11 | 154711 | 157411 |
| Base 12 | 119712 | 120112 |
| Base 13 | b9b13 | bc213 |
| Base 14 | a1d14 | a4114 |
| Base 15 | 8c715 | 8e715 |
| Base 16 | 7c316 | 7e116 |