Compare 664121 vs 664381
| Property | 664121 | 664381 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6641211 | 6643811 |
| Prime factorization | 664121 | 664381 |
| Divisors count | 2 | 2 |
| Divisors | 1, 664121 | 1, 664381 |
| Number of properties | 6 | 4 |
| Chen primes | 21072nd | 21083rd |
| Cousin primes (2nd member) | 5810th | |
| Happy primes | 7639th | |
| Primes | 53878th | 53897th |
| Prime triplets (2nd member) | 2119th | |
| Super primes | 5491st | |
| Twin primes (1st member) | 5817th | |
| Twin primes (2nd member) | 5819th | |
| Roman numberals | ||
| Base 2 | 101000100010001110012 | 101000100011001111012 |
| Base 3 | 10202020000023 | 10202021002013 |
| Base 4 | 22020203214 | 22020303314 |
| Base 5 | 1322224415 | 1322300115 |
| Base 6 | 221223456 | 221235016 |
| Base 7 | 54341337 | 54346547 |
| Base 8 | 24210718 | 24214758 |
| Base 9 | 12220029 | 12223219 |
| Base 10 | 66412110 | 66438110 |
| Base 11 | 413a6711 | 41418311 |
| Base 12 | 2803b512 | 28059112 |
| Base 13 | 1a339313 | 1a353313 |
| Base 14 | 13405314 | 13419b14 |
| Base 15 | d1b9b15 | d1cc115 |
| Base 16 | a223916 | a233d16 |