Compare 8 vs 61
| Property | 8 | 61 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 1 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 23 | 611 |
| Prime factorization | 2 × 2 × 2 | 61 |
| Divisors count | 4 | 2 |
| Divisors | 1, 2, 4, 8 | 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 | VIII | LXI |
| Base 2 | 10002 | 1111012 |
| Base 3 | 223 | 20213 |
| Base 4 | 204 | 3314 |
| Base 5 | 135 | 2215 |
| Base 6 | 126 | 1416 |
| Base 7 | 117 | 1157 |
| Base 8 | 108 | 758 |
| Base 9 | 89 | 679 |
| Base 10 | 810 | 6110 |
| Base 11 | 811 | 5611 |
| Base 12 | 812 | 5112 |
| Base 13 | 813 | 4913 |
| Base 14 | 814 | 4514 |
| Base 15 | 815 | 4115 |
| Base 16 | 816 | 3d16 |