Compare 397 vs 1801
| Property | 397 | 1801 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 3971 | 18011 |
| Prime factorization | 397 | 1801 |
| Divisors count | 2 | 2 |
| Divisors | 1, 397 | 1, 1801 |
| Number of properties | 8 | 7 |
| Additive primes | 45th | |
| Chen primes | 174th | |
| Cousin primes (1st member) | 22nd | |
| Cuban primes 1 | 8th | 13th |
| Happy primes | 21st | |
| Harmonic primes | 99th | |
| Isolated primes | 37th | 168th |
| Left-truncatable primes | 31st | |
| Lucky primes | 66th | |
| Primes | 78th | 279th |
| Pythagorean primes | 37th | 136th |
| Roman numberals | CCCXCVII | MDCCCI |
| Base 2 | 1100011012 | 111000010012 |
| Base 3 | 1122013 | 21102013 |
| Base 4 | 120314 | 1300214 |
| Base 5 | 30425 | 242015 |
| Base 6 | 15016 | 122016 |
| Base 7 | 11057 | 51527 |
| Base 8 | 6158 | 34118 |
| Base 9 | 4819 | 24219 |
| Base 10 | 39710 | 180110 |
| Base 11 | 33111 | 139811 |
| Base 12 | 29112 | 106112 |
| Base 13 | 24713 | a8713 |
| Base 14 | 20514 | 92914 |
| Base 15 | 1b715 | 80115 |
| Base 16 | 18d16 | 70916 |