Compare 1973 vs 1987
| Property | 1973 | 1987 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 19731 | 19871 |
| Prime factorization | 1973 | 1987 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1973 | 1, 1987 |
| Number of properties | 7 | 6 |
| Good primes | 61st | 62nd |
| Harmonic primes | 111th | |
| Isolated primes | 179th | 181st |
| Lucky primes | 70th | |
| Primes | 298th | 300th |
| Pythagorean primes | 145th | |
| Sexy primes (1st member) | 126th | 127th |
| Sexy prime triplets (1st member) | 50th | |
| Sophie germain primes | 60th | |
| Roman numberals | MCMLXXIII | MCMLXXXVII |
| Base 2 | 111101101012 | 111110000112 |
| Base 3 | 22010023 | 22011213 |
| Base 4 | 1323114 | 1330034 |
| Base 5 | 303435 | 304225 |
| Base 6 | 130456 | 131116 |
| Base 7 | 55167 | 55367 |
| Base 8 | 36658 | 37038 |
| Base 9 | 26329 | 26479 |
| Base 10 | 197310 | 198710 |
| Base 11 | 153411 | 154711 |
| Base 12 | 118512 | 119712 |
| Base 13 | b8a13 | b9b13 |
| Base 14 | a0d14 | a1d14 |
| Base 15 | 8b815 | 8c715 |
| Base 16 | 7b516 | 7c316 |