Compare 397 vs 919
| Property | 397 | 919 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 3971 | 9191 |
| Prime factorization | 397 | 919 |
| Divisors count | 2 | 2 |
| Divisors | 1, 397 | 1, 919 |
| Number of properties | 8 | 7 |
| Additive primes | 45th | 84th |
| Chen primes | 107th | |
| Cousin primes (1st member) | 22nd | |
| Cuban primes 1 | 8th | 11th |
| Happy primes | 21st | |
| Isolated primes | 37th | 88th |
| Left-truncatable primes | 31st | |
| Palindromic primes | 19th | |
| Primes | 78th | 157th |
| Pythagorean primes | 37th | |
| Super primes | 37th | |
| Roman numberals | CCCXCVII | CMXIX |
| Base 2 | 1100011012 | 11100101112 |
| Base 3 | 1122013 | 10210013 |
| Base 4 | 120314 | 321134 |
| Base 5 | 30425 | 121345 |
| Base 6 | 15016 | 41316 |
| Base 7 | 11057 | 24527 |
| Base 8 | 6158 | 16278 |
| Base 9 | 4819 | 12319 |
| Base 10 | 39710 | 91910 |
| Base 11 | 33111 | 76611 |
| Base 12 | 29112 | 64712 |
| Base 13 | 24713 | 55913 |
| Base 14 | 20514 | 49914 |
| Base 15 | 1b715 | 41415 |
| Base 16 | 18d16 | 39716 |