Compare 1231 vs 1543
| Property | 1231 | 1543 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 12311 | 15431 |
| Prime factorization | 1231 | 1543 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1231 | 1, 1543 |
| Number of properties | 6 | 7 |
| Additive primes | 108th | 132nd |
| Emirps | 56th | |
| Good primes | 55th | |
| Isolated primes | 144th | |
| Long primes | 92nd | |
| Lucky primes | 52nd | 58th |
| Primes | 202nd | 243rd |
| Sexy primes (1st member) | 88th | 106th |
| Twin primes (2nd member) | 42nd | |
| Roman numberals | MCCXXXI | MDXLIII |
| Base 2 | 100110011112 | 110000001112 |
| Base 3 | 12001213 | 20100113 |
| Base 4 | 1030334 | 1200134 |
| Base 5 | 144115 | 221335 |
| Base 6 | 54116 | 110516 |
| Base 7 | 34067 | 43337 |
| Base 8 | 23178 | 30078 |
| Base 9 | 16179 | 21049 |
| Base 10 | 123110 | 154310 |
| Base 11 | a1a11 | 118311 |
| Base 12 | 86712 | a8712 |
| Base 13 | 73913 | 91913 |
| Base 14 | 63d14 | 7c314 |
| Base 15 | 57115 | 6cd15 |
| Base 16 | 4cf16 | 60716 |