Compare 1531 vs 5281
| Property | 1531 | 5281 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 15311 | 52811 |
| Prime factorization | 1531 | 5281 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1531 | 1, 5281 |
| Number of properties | 5 | 6 |
| Centered decagonal primes | 13th | 21st |
| Happy primes | 120th | |
| Isolated primes | 143rd | |
| Long primes | 91st | |
| Primes | 242nd | 701st |
| Pythagorean primes | 344th | |
| Super primes | 126th | |
| Twin primes (2nd member) | 131st | |
| Ulam primes | 22nd | |
| Roman numberals | MDXXXI | |
| Base 2 | 101111110112 | 10100101000012 |
| Base 3 | 20022013 | 210201213 |
| Base 4 | 1133234 | 11022014 |
| Base 5 | 221115 | 1321115 |
| Base 6 | 110316 | 402416 |
| Base 7 | 43157 | 212537 |
| Base 8 | 27738 | 122418 |
| Base 9 | 20819 | 72179 |
| Base 10 | 153110 | 528110 |
| Base 11 | 117211 | 3a7111 |
| Base 12 | a7712 | 308112 |
| Base 13 | 90a13 | 253313 |
| Base 14 | 7b514 | 1cd314 |
| Base 15 | 6c115 | 187115 |
| Base 16 | 5fb16 | 14a116 |