Compare 1823 vs 1987
| Property | 1823 | 1987 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 18231 | 19871 |
| Prime factorization | 1823 | 1987 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1823 | 1, 1987 |
| Number of properties | 6 | 6 |
| Good primes | 62nd | |
| Isolated primes | 170th | 181st |
| Left-truncatable primes | 61st | |
| Long primes | 110th | |
| Lucky primes | 70th | |
| Primes | 281st | 300th |
| Safe primes | 36th | |
| Sexy primes (1st member) | 127th | |
| Sexy prime triplets (1st member) | 50th | |
| Super primes | 60th | |
| Roman numberals | MDCCCXXIII | MCMLXXXVII |
| Base 2 | 111000111112 | 111110000112 |
| Base 3 | 21111123 | 22011213 |
| Base 4 | 1301334 | 1330034 |
| Base 5 | 242435 | 304225 |
| Base 6 | 122356 | 131116 |
| Base 7 | 52137 | 55367 |
| Base 8 | 34378 | 37038 |
| Base 9 | 24459 | 26479 |
| Base 10 | 182310 | 198710 |
| Base 11 | 140811 | 154711 |
| Base 12 | 107b12 | 119712 |
| Base 13 | aa313 | b9b13 |
| Base 14 | 94314 | a1d14 |
| Base 15 | 81815 | 8c715 |
| Base 16 | 71f16 | 7c316 |