Compare 1531 vs 1553
| Property | 1531 | 1553 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 15311 | 15531 |
| Prime factorization | 1531 | 1553 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1531 | 1, 1553 |
| Number of properties | 5 | 8 |
| Centered decagonal primes | 13th | |
| Chen primes | 156th | |
| Cousin primes (2nd member) | 54th | |
| Isolated primes | 143rd | 146th |
| Long primes | 91st | 94th |
| Primes | 242nd | 245th |
| Pythagorean primes | 118th | |
| Sexy primes (1st member) | 107th | |
| Ulam primes | 22nd | 23rd |
| Roman numberals | MDXXXI | MDLIII |
| Base 2 | 101111110112 | 110000100012 |
| Base 3 | 20022013 | 20101123 |
| Base 4 | 1133234 | 1201014 |
| Base 5 | 221115 | 222035 |
| Base 6 | 110316 | 111056 |
| Base 7 | 43157 | 43467 |
| Base 8 | 27738 | 30218 |
| Base 9 | 20819 | 21159 |
| Base 10 | 153110 | 155310 |
| Base 11 | 117211 | 119211 |
| Base 12 | a7712 | a9512 |
| Base 13 | 90a13 | 92613 |
| Base 14 | 7b514 | 7cd14 |
| Base 15 | 6c115 | 6d815 |
| Base 16 | 5fb16 | 61116 |