Compare 397 vs 449
| Property | 397 | 449 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 3971 | 4491 |
| Prime factorization | 397 | 449 |
| Divisors count | 2 | 2 |
| Divisors | 1, 397 | 1, 449 |
| Number of properties | 8 | 9 |
| Additive primes | 45th | 50th |
| Chen primes | 61st | |
| Cousin primes (1st member) | 22nd | |
| Cuban primes 1 | 8th | |
| Happy primes | 21st | |
| Harmonic primes | 33rd | |
| Isolated primes | 37th | 42nd |
| Left-truncatable primes | 31st | |
| Primes | 78th | 87th |
| Proth primes | 12th | |
| Pythagorean primes | 37th | 42nd |
| Sexy primes (2nd member) | 44th | |
| Solinas primes | 35th | |
| Roman numberals | CCCXCVII | CDXLIX |
| Base 2 | 1100011012 | 1110000012 |
| Base 3 | 1122013 | 1211223 |
| Base 4 | 120314 | 130014 |
| Base 5 | 30425 | 32445 |
| Base 6 | 15016 | 20256 |
| Base 7 | 11057 | 12117 |
| Base 8 | 6158 | 7018 |
| Base 9 | 4819 | 5489 |
| Base 10 | 39710 | 44910 |
| Base 11 | 33111 | 37911 |
| Base 12 | 29112 | 31512 |
| Base 13 | 24713 | 28713 |
| Base 14 | 20514 | 24114 |
| Base 15 | 1b715 | 1ee15 |
| Base 16 | 18d16 | 1c116 |