Compare 664661 vs 664691
| Property | 664661 | 664691 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6646611 | 6646911 |
| Prime factorization | 664661 | 664691 |
| Divisors count | 2 | 2 |
| Divisors | 1, 664661 | 1, 664691 |
| Number of properties | 7 | 5 |
| Additive primes | 21046th | |
| Chen primes | 21090th | 21093rd |
| Cousin primes (2nd member) | 5814th | |
| Primes | 53920th | 53926th |
| Prime quadruplets (1st member) | 129th | |
| Prime triplets (1st member) | 2120th | |
| Prime triplets (2nd member) | 2122nd | |
| Sexy primes (1st member) | 11637th | |
| Twin primes (1st member) | 5821st | 5823rd |
| Roman numberals | ||
| Base 2 | 101000100100010101012 | 101000100100011100112 |
| Base 3 | 10202022020023 | 10202022100123 |
| Base 4 | 22021011114 | 22021013034 |
| Base 5 | 1322321215 | 1322322315 |
| Base 6 | 221250456 | 221251356 |
| Base 7 | 54355347 | 54356067 |
| Base 8 | 24221258 | 24221638 |
| Base 9 | 12226629 | 12227059 |
| Base 10 | 66466110 | 66469110 |
| Base 11 | 41440811 | 41443511 |
| Base 12 | 28078512 | 2807ab12 |
| Base 13 | 1a36ba13 | 1a371113 |
| Base 14 | 13431b14 | 13433d14 |
| Base 15 | d1e0b15 | d1e2b15 |
| Base 16 | a245516 | a247316 |