Compare 449 vs 521
| Property | 449 | 521 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 4491 | 5211 |
| Prime factorization | 449 | 521 |
| Divisors count | 2 | 2 |
| Divisors | 1, 449 | 1, 521 |
| Number of properties | 9 | 6 |
| Additive primes | 50th | |
| Chen primes | 61st | 70th |
| Harmonic primes | 33rd | |
| Isolated primes | 42nd | |
| Lucas primes | 8th | |
| Primes | 87th | 98th |
| Proth primes | 12th | |
| Pythagorean primes | 42nd | 46th |
| Sexy primes (2nd member) | 44th | |
| Solinas primes | 35th | 39th |
| Twin primes (1st member) | 25th | |
| Roman numberals | CDXLIX | DXXI |
| Base 2 | 1110000012 | 10000010012 |
| Base 3 | 1211223 | 2010223 |
| Base 4 | 130014 | 200214 |
| Base 5 | 32445 | 40415 |
| Base 6 | 20256 | 22256 |
| Base 7 | 12117 | 13437 |
| Base 8 | 7018 | 10118 |
| Base 9 | 5489 | 6389 |
| Base 10 | 44910 | 52110 |
| Base 11 | 37911 | 43411 |
| Base 12 | 31512 | 37512 |
| Base 13 | 28713 | 31113 |
| Base 14 | 24114 | 29314 |
| Base 15 | 1ee15 | 24b15 |
| Base 16 | 1c116 | 20916 |