Compare 491 vs 761
| Property | 491 | 761 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 4911 | 7611 |
| Prime factorization | 491 | 761 |
| Divisors count | 2 | 2 |
| Divisors | 1, 491 | 1, 761 |
| Number of properties | 7 | 9 |
| Centered square primes | 10th | |
| Chen primes | 66th | 91st |
| Cousin primes (2nd member) | 26th | 32nd |
| Emirps | 27th | |
| Happy primes | 31st | |
| Harmonic primes | 38th | |
| Isolated primes | 47th | 76th |
| Long primes | 34th | |
| Primes | 94th | 135th |
| Pythagorean primes | 64th | |
| Sophie germain primes | 25th | 34th |
| Roman numberals | CDXCI | DCCLXI |
| Base 2 | 1111010112 | 10111110012 |
| Base 3 | 2000123 | 10010123 |
| Base 4 | 132234 | 233214 |
| Base 5 | 34315 | 110215 |
| Base 6 | 21356 | 33056 |
| Base 7 | 13017 | 21357 |
| Base 8 | 7538 | 13718 |
| Base 9 | 6059 | 10359 |
| Base 10 | 49110 | 76110 |
| Base 11 | 40711 | 63211 |
| Base 12 | 34b12 | 53512 |
| Base 13 | 2ba13 | 46713 |
| Base 14 | 27114 | 3c514 |
| Base 15 | 22b15 | 35b15 |
| Base 16 | 1eb16 | 2f916 |