Compare 1409 vs 1531
| Property | 1409 | 1531 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 14091 | 15311 |
| Prime factorization | 1409 | 1531 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1409 | 1, 1531 |
| Number of properties | 8 | 5 |
| Centered decagonal primes | 13th | |
| Chen primes | 146th | |
| Emirps | 66th | |
| Isolated primes | 132nd | 143rd |
| Long primes | 91st | |
| Primes | 223rd | 242nd |
| Proth primes | 20th | |
| Pythagorean primes | 110th | |
| Sophie germain primes | 46th | |
| Super primes | 48th | |
| Ulam primes | 22nd | |
| Roman numberals | MCDIX | MDXXXI |
| Base 2 | 101100000012 | 101111110112 |
| Base 3 | 12210123 | 20022013 |
| Base 4 | 1120014 | 1133234 |
| Base 5 | 211145 | 221115 |
| Base 6 | 103056 | 110316 |
| Base 7 | 40527 | 43157 |
| Base 8 | 26018 | 27738 |
| Base 9 | 18359 | 20819 |
| Base 10 | 140910 | 153110 |
| Base 11 | 107111 | 117211 |
| Base 12 | 99512 | a7712 |
| Base 13 | 84513 | 90a13 |
| Base 14 | 72914 | 7b514 |
| Base 15 | 63e15 | 6c115 |
| Base 16 | 58116 | 5fb16 |