Compare 1543 vs 1987
| Property | 1543 | 1987 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 15431 | 19871 |
| Prime factorization | 1543 | 1987 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1543 | 1, 1987 |
| Number of properties | 7 | 6 |
| Additive primes | 132nd | |
| Good primes | 55th | 62nd |
| Isolated primes | 144th | 181st |
| Long primes | 92nd | |
| Lucky primes | 58th | 70th |
| Primes | 243rd | 300th |
| Sexy primes (1st member) | 106th | 127th |
| Sexy prime triplets (1st member) | 50th | |
| Roman numberals | MDXLIII | MCMLXXXVII |
| Base 2 | 110000001112 | 111110000112 |
| Base 3 | 20100113 | 22011213 |
| Base 4 | 1200134 | 1330034 |
| Base 5 | 221335 | 304225 |
| Base 6 | 110516 | 131116 |
| Base 7 | 43337 | 55367 |
| Base 8 | 30078 | 37038 |
| Base 9 | 21049 | 26479 |
| Base 10 | 154310 | 198710 |
| Base 11 | 118311 | 154711 |
| Base 12 | a8712 | 119712 |
| Base 13 | 91913 | b9b13 |
| Base 14 | 7c314 | a1d14 |
| Base 15 | 6cd15 | 8c715 |
| Base 16 | 60716 | 7c316 |