Compare 31 vs 55
Property | 31 | 55 |
---|---|---|
Type | prime | semiprime |
Unique factors | 1 | 2 |
Total factors | 1 | 2 |
Prime factorization | 311 | 51 × 111 |
Prime factorization | 31 | 5 × 11 |
Divisors count | 2 | 4 |
Divisors | 1, 31 | 1, 5, 11, 55 |
Number of properties | 18 | 1 |
Centered decagonal primes | 2nd | |
Centered triangular primes | 2nd | |
Chen primes | 11th | |
Class 1+ primes | 8th | |
Emirps | 3rd | |
Euclid primes | 4th | |
Happy primes | 5th | |
Lucky primes | 4th | |
Mersenne primes | 3rd | |
Multiplicative primes | 7th | |
Pierpont primes of the 2nd kind | 8th | |
Primes | 11th | |
Right-truncatable primes | 7th | |
Semiprimes | 19th | |
Sexy primes (1st member) | 7th | |
Sexy prime triplets (1st member) | 5th | |
Solinas primes | 10th | |
Super primes | 5th | |
Twin primes (2nd member) | 5th | |
Roman numberals | XXXI | LV |
Base 2 | 111112 | 1101112 |
Base 3 | 10113 | 20013 |
Base 4 | 1334 | 3134 |
Base 5 | 1115 | 2105 |
Base 6 | 516 | 1316 |
Base 7 | 437 | 1067 |
Base 8 | 378 | 678 |
Base 9 | 349 | 619 |
Base 10 | 3110 | 5510 |
Base 11 | 2911 | 5011 |
Base 12 | 2712 | 4712 |
Base 13 | 2513 | 4313 |
Base 14 | 2314 | 3d14 |
Base 15 | 2115 | 3a15 |
Base 16 | 1f16 | 3716 |