Compare 491 vs 911
| Property | 491 | 911 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 4911 | 9111 |
| Prime factorization | 491 | 911 |
| Divisors count | 2 | 2 |
| Divisors | 1, 491 | 1, 911 |
| Number of properties | 7 | 7 |
| Additive primes | 83rd | |
| Centered decagonal primes | 9th | |
| Chen primes | 66th | 106th |
| Cousin primes (2nd member) | 26th | 39th |
| Harmonic primes | 38th | |
| Isolated primes | 47th | 87th |
| Long primes | 34th | |
| Primes | 94th | 156th |
| Sophie germain primes | 25th | 36th |
| Roman numberals | CDXCI | CMXI |
| Base 2 | 1111010112 | 11100011112 |
| Base 3 | 2000123 | 10202023 |
| Base 4 | 132234 | 320334 |
| Base 5 | 34315 | 121215 |
| Base 6 | 21356 | 41156 |
| Base 7 | 13017 | 24417 |
| Base 8 | 7538 | 16178 |
| Base 9 | 6059 | 12229 |
| Base 10 | 49110 | 91110 |
| Base 11 | 40711 | 75911 |
| Base 12 | 34b12 | 63b12 |
| Base 13 | 2ba13 | 55113 |
| Base 14 | 27114 | 49114 |
| Base 15 | 22b15 | 40b15 |
| Base 16 | 1eb16 | 38f16 |