Compare 1979 vs 1987
| Property | 1979 | 1987 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 19791 | 19871 |
| Prime factorization | 1979 | 1987 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1979 | 1, 1987 |
| Number of properties | 6 | 6 |
| Chen primes | 184th | |
| Emirps | 96th | |
| Good primes | 62nd | |
| Isolated primes | 180th | 181st |
| Long primes | 116th | |
| Lucky primes | 70th | |
| Primes | 299th | 300th |
| Sexy primes (1st member) | 127th | |
| Sexy primes (2nd member) | 126th | |
| Sexy prime triplets (1st member) | 50th | |
| Roman numberals | MCMLXXIX | MCMLXXXVII |
| Base 2 | 111101110112 | 111110000112 |
| Base 3 | 22010223 | 22011213 |
| Base 4 | 1323234 | 1330034 |
| Base 5 | 304045 | 304225 |
| Base 6 | 130556 | 131116 |
| Base 7 | 55257 | 55367 |
| Base 8 | 36738 | 37038 |
| Base 9 | 26389 | 26479 |
| Base 10 | 197910 | 198710 |
| Base 11 | 153a11 | 154711 |
| Base 12 | 118b12 | 119712 |
| Base 13 | b9313 | b9b13 |
| Base 14 | a1514 | a1d14 |
| Base 15 | 8be15 | 8c715 |
| Base 16 | 7bb16 | 7c316 |