Compare 664121 vs 664211
| Property | 664121 | 664211 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6641211 | 6642111 |
| Prime factorization | 664121 | 664211 |
| Divisors count | 2 | 2 |
| Divisors | 1, 664121 | 1, 664211 |
| Number of properties | 6 | 4 |
| Chen primes | 21072nd | 21075th |
| Cousin primes (2nd member) | 5810th | |
| Happy primes | 7639th | 7640th |
| Isolated primes | 42253rd | |
| Primes | 53878th | 53886th |
| Prime triplets (2nd member) | 2119th | |
| Twin primes (1st member) | 5817th | |
| Roman numberals | ||
| Base 2 | 101000100010001110012 | 101000100010100100112 |
| Base 3 | 10202020000023 | 10202020101023 |
| Base 4 | 22020203214 | 22020221034 |
| Base 5 | 1322224415 | 1322233215 |
| Base 6 | 221223456 | 221230156 |
| Base 7 | 54341337 | 54343227 |
| Base 8 | 24210718 | 24212238 |
| Base 9 | 12220029 | 12221129 |
| Base 10 | 66412110 | 66421110 |
| Base 11 | 413a6711 | 41403911 |
| Base 12 | 2803b512 | 28046b12 |
| Base 13 | 1a339313 | 1a343213 |
| Base 14 | 13405314 | 1340b914 |
| Base 15 | d1b9b15 | d1c0b15 |
| Base 16 | a223916 | a229316 |