Compare 28 vs 61
Property | 28 | 61 |
---|---|---|
Type | composite number | prime |
Unique factors | 2 | 1 |
Total factors | 3 | 1 |
Prime factorization | 22 × 71 | 611 |
Prime factorization | 2 × 2 × 7 | 61 |
Divisors count | 6 | 2 |
Divisors | 1, 2, 4, 7, 14, 28 | 1, 61 |
Number of properties | 0 | 12 |
Additive primes | 11th | |
Centered decagonal primes | 3rd | |
Centered square primes | 4th | |
Cuban primes 1 | 4th | |
Long primes | 8th | |
Primes | 18th | |
Pythagorean primes | 8th | |
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 | XXVIII | LXI |
Base 2 | 111002 | 1111012 |
Base 3 | 10013 | 20213 |
Base 4 | 1304 | 3314 |
Base 5 | 1035 | 2215 |
Base 6 | 446 | 1416 |
Base 7 | 407 | 1157 |
Base 8 | 348 | 758 |
Base 9 | 319 | 679 |
Base 10 | 2810 | 6110 |
Base 11 | 2611 | 5611 |
Base 12 | 2412 | 5112 |
Base 13 | 2213 | 4913 |
Base 14 | 2014 | 4514 |
Base 15 | 1d15 | 4115 |
Base 16 | 1c16 | 3d16 |