Compare 1531 vs 1601
| Property | 1531 | 1601 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 15311 | 16011 |
| Prime factorization | 1531 | 1601 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1531 | 1, 1601 |
| Number of properties | 5 | 12 |
| Centered decagonal primes | 13th | |
| Chen primes | 160th | |
| Cousin primes (2nd member) | 57th | |
| Emirps | 78th | |
| Harmonic primes | 85th | |
| Isolated primes | 143rd | 153rd |
| Long primes | 91st | |
| Primes | 242nd | 252nd |
| Proth primes | 21st | |
| Pythagorean primes | 120th | |
| Sexy primes (1st member) | 108th | |
| Sexy prime quadrupletss (1st member) | 10th | |
| Sexy prime triplets (1st member) | 41st | |
| Sophie germain primes | 54th | |
| Ulam primes | 22nd | |
| Roman numberals | MDXXXI | MDCI |
| Base 2 | 101111110112 | 110010000012 |
| Base 3 | 20022013 | 20120223 |
| Base 4 | 1133234 | 1210014 |
| Base 5 | 221115 | 224015 |
| Base 6 | 110316 | 112256 |
| Base 7 | 43157 | 44457 |
| Base 8 | 27738 | 31018 |
| Base 9 | 20819 | 21689 |
| Base 10 | 153110 | 160110 |
| Base 11 | 117211 | 122611 |
| Base 12 | a7712 | b1512 |
| Base 13 | 90a13 | 96213 |
| Base 14 | 7b514 | 82514 |
| Base 15 | 6c115 | 71b15 |
| Base 16 | 5fb16 | 64116 |