Compare 31 vs 1531
Property | 31 | 1531 |
---|---|---|
Type | prime | prime |
Unique factors | 1 | 1 |
Total factors | 1 | 1 |
Prime factorization | 311 | 15311 |
Prime factorization | 31 | 1531 |
Divisors count | 2 | 2 |
Divisors | 1, 31 | 1, 1531 |
Number of properties | 18 | 5 |
Centered decagonal primes | 2nd | 13th |
Centered triangular primes | 2nd | |
Chen primes | 11th | |
Class 1+ primes | 8th | |
Emirps | 3rd | |
Euclid primes | 4th | |
Happy primes | 5th | |
Isolated primes | 143rd | |
Long primes | 91st | |
Lucky primes | 4th | |
Mersenne primes | 3rd | |
Multiplicative primes | 7th | |
Pierpont primes of the 2nd kind | 8th | |
Primes | 11th | 242nd |
Right-truncatable primes | 7th | |
Sexy primes (1st member) | 7th | |
Sexy prime triplets (1st member) | 5th | |
Solinas primes | 10th | |
Super primes | 5th | |
Twin primes (2nd member) | 5th | |
Ulam primes | 22nd | |
Roman numberals | XXXI | MDXXXI |
Base 2 | 111112 | 101111110112 |
Base 3 | 10113 | 20022013 |
Base 4 | 1334 | 1133234 |
Base 5 | 1115 | 221115 |
Base 6 | 516 | 110316 |
Base 7 | 437 | 43157 |
Base 8 | 378 | 27738 |
Base 9 | 349 | 20819 |
Base 10 | 3110 | 153110 |
Base 11 | 2911 | 117211 |
Base 12 | 2712 | a7712 |
Base 13 | 2513 | 90a13 |
Base 14 | 2314 | 7b514 |
Base 15 | 2115 | 6c115 |
Base 16 | 1f16 | 5fb16 |