Compare 491 vs 495
| Property | 491 | 495 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 4 |
| Prime factorization | 4911 | 32 × 51 × 111 |
| Prime factorization | 491 | 3 × 3 × 5 × 11 |
| Divisors count | 2 | 12 |
| Divisors | 1, 491 | 1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495 |
| Number of properties | 7 | 0 |
| Chen primes | 66th | |
| Cousin primes (2nd member) | 26th | |
| Harmonic primes | 38th | |
| Isolated primes | 47th | |
| Long primes | 34th | |
| Primes | 94th | |
| Sophie germain primes | 25th | |
| Roman numberals | CDXCI | CDXCV |
| Base 2 | 1111010112 | 1111011112 |
| Base 3 | 2000123 | 2001003 |
| Base 4 | 132234 | 132334 |
| Base 5 | 34315 | 34405 |
| Base 6 | 21356 | 21436 |
| Base 7 | 13017 | 13057 |
| Base 8 | 7538 | 7578 |
| Base 9 | 6059 | 6109 |
| Base 10 | 49110 | 49510 |
| Base 11 | 40711 | 41011 |
| Base 12 | 34b12 | 35312 |
| Base 13 | 2ba13 | 2c113 |
| Base 14 | 27114 | 27514 |
| Base 15 | 22b15 | 23015 |
| Base 16 | 1eb16 | 1ef16 |