Compare 491 vs 503
| Property | 491 | 503 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 4911 | 5031 |
| Prime factorization | 491 | 503 |
| Divisors count | 2 | 2 |
| Divisors | 1, 491 | 1, 503 |
| Number of properties | 7 | 9 |
| Chen primes | 66th | 68th |
| Cousin primes (2nd member) | 26th | 27th |
| Harmonic primes | 38th | 40th |
| Isolated primes | 47th | 49th |
| Long primes | 34th | 36th |
| Primes | 94th | 96th |
| Safe primes | 18th | |
| Sexy primes (1st member) | 47th | |
| Solinas primes | 37th | |
| Sophie germain primes | 25th | |
| Roman numberals | CDXCI | DIII |
| Base 2 | 1111010112 | 1111101112 |
| Base 3 | 2000123 | 2001223 |
| Base 4 | 132234 | 133134 |
| Base 5 | 34315 | 40035 |
| Base 6 | 21356 | 21556 |
| Base 7 | 13017 | 13167 |
| Base 8 | 7538 | 7678 |
| Base 9 | 6059 | 6189 |
| Base 10 | 49110 | 50310 |
| Base 11 | 40711 | 41811 |
| Base 12 | 34b12 | 35b12 |
| Base 13 | 2ba13 | 2c913 |
| Base 14 | 27114 | 27d14 |
| Base 15 | 22b15 | 23815 |
| Base 16 | 1eb16 | 1f716 |