Compare 664789 vs 666139
| Property | 664789 | 666139 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6647891 | 6661391 |
| Prime factorization | 664789 | 666139 |
| Divisors count | 2 | 2 |
| Divisors | 1, 664789 | 1, 666139 |
| Number of properties | 4 | 4 |
| Additive primes | 21093rd | |
| Cousin primes (1st member) | 5815th | 5825th |
| Isolated primes | 42288th | 42372nd |
| Primes | 53933rd | 54035th |
| Ulam primes | 3955th | |
| Roman numberals | ||
| Base 2 | 101000100100110101012 | 101000101010000110112 |
| Base 3 | 10202022202113 | 10202112022113 |
| Base 4 | 22021031114 | 22022201234 |
| Base 5 | 1322331245 | 1323040245 |
| Base 6 | 221254216 | 221355516 |
| Base 7 | 54361067 | 54430457 |
| Base 8 | 24223258 | 24250338 |
| Base 9 | 12228249 | 12246849 |
| Base 10 | 66478910 | 66613910 |
| Base 11 | 41451411 | 41553111 |
| Base 12 | 28087112 | 2815b712 |
| Base 13 | 1a378813 | 1a428613 |
| Base 14 | 1343ad14 | 134a9514 |
| Base 15 | d1e9415 | d259415 |
| Base 16 | a24d516 | a2a1b16 |