Compare 15 vs 61
Property | 15 | 61 |
---|---|---|
Type | semiprime | prime |
Unique factors | 2 | 1 |
Total factors | 2 | 1 |
Prime factorization | 31 × 51 | 611 |
Prime factorization | 3 × 5 | 61 |
Divisors count | 4 | 2 |
Divisors | 1, 3, 5, 15 | 1, 61 |
Number of properties | 1 | 12 |
Additive primes | 11th | |
Centered decagonal primes | 3rd | |
Centered square primes | 4th | |
Cuban primes 1 | 4th | |
Long primes | 8th | |
Primes | 18th | |
Pythagorean primes | 8th | |
Semiprimes | 6th | |
Sexy primes (1st member) | 12th | |
Sexy prime quadrupletss (1st member) | 4th | |
Sexy prime triplets (1st member) | 8th | |
Solinas primes | 15th | |
Twin primes (2nd member) | 7th | |
Roman numberals | XV | LXI |
Base 2 | 11112 | 1111012 |
Base 3 | 1203 | 20213 |
Base 4 | 334 | 3314 |
Base 5 | 305 | 2215 |
Base 6 | 236 | 1416 |
Base 7 | 217 | 1157 |
Base 8 | 178 | 758 |
Base 9 | 169 | 679 |
Base 10 | 1510 | 6110 |
Base 11 | 1411 | 5611 |
Base 12 | 1312 | 5112 |
Base 13 | 1213 | 4913 |
Base 14 | 1114 | 4514 |
Base 15 | 1015 | 4115 |
Base 16 | f16 | 3d16 |