Compare 1831 vs 1993
| Property | 1831 | 1993 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 18311 | 19931 |
| Prime factorization | 1831 | 1993 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1831 | 1, 1993 |
| Number of properties | 6 | 10 |
| Additive primes | 150th | |
| Cousin primes (1st member) | 64th | |
| Emirps | 88th | |
| Good primes | 63rd | |
| Harmonic primes | 101st | 112th |
| Isolated primes | 171st | 182nd |
| Lucky primes | 67th | |
| Primes | 282nd | 301st |
| Prime triplets (1st member) | 49th | |
| Pythagorean primes | 146th | |
| Sexy primes (1st member) | 128th | |
| Sexy primes (2nd member) | 127th | |
| Sexy prime triplets (2nd member) | 50th | |
| Roman numberals | MDCCCXXXI | MCMXCIII |
| Base 2 | 111001001112 | 111110010012 |
| Base 3 | 21112113 | 22012113 |
| Base 4 | 1302134 | 1330214 |
| Base 5 | 243115 | 304335 |
| Base 6 | 122516 | 131216 |
| Base 7 | 52247 | 55457 |
| Base 8 | 34478 | 37118 |
| Base 9 | 24549 | 26549 |
| Base 10 | 183110 | 199310 |
| Base 11 | 141511 | 155211 |
| Base 12 | 108712 | 11a112 |
| Base 13 | aab13 | ba413 |
| Base 14 | 94b14 | a2514 |
| Base 15 | 82115 | 8cd15 |
| Base 16 | 72716 | 7c916 |