Compare 664691 vs 665981
| Property | 664691 | 665981 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6646911 | 6659811 |
| Prime factorization | 664691 | 665981 |
| Divisors count | 2 | 2 |
| Divisors | 1, 664691 | 1, 665981 |
| Number of properties | 5 | 4 |
| Chen primes | 21093rd | 21124th |
| Cousin primes (2nd member) | 5814th | |
| Primes | 53926th | 54020th |
| Prime triplets (2nd member) | 2122nd | |
| Twin primes (1st member) | 5823rd | 5831st |
| Ulam primes | 3967th | |
| Roman numberals | ||
| Base 2 | 101000100100011100112 | 101000101001011111012 |
| Base 3 | 10202022100123 | 10202111122223 |
| Base 4 | 22021013034 | 22022113314 |
| Base 5 | 1322322315 | 1323024115 |
| Base 6 | 221251356 | 221351256 |
| Base 7 | 54356067 | 54424317 |
| Base 8 | 24221638 | 24245758 |
| Base 9 | 12227059 | 12244889 |
| Base 10 | 66469110 | 66598110 |
| Base 11 | 41443511 | 4153a811 |
| Base 12 | 2807ab12 | 2814a512 |
| Base 13 | 1a371113 | 1a419413 |
| Base 14 | 13433d14 | 1349c114 |
| Base 15 | d1e2b15 | d24db15 |
| Base 16 | a247316 | a297d16 |