Compare 666139 vs 666607
| Property | 666139 | 666607 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6661391 | 6666071 |
| Prime factorization | 666139 | 666607 |
| Divisors count | 2 | 2 |
| Divisors | 1, 666139 | 1, 666607 |
| Number of properties | 4 | 4 |
| Additive primes | 21093rd | 21103rd |
| Cousin primes (1st member) | 5825th | |
| Happy primes | 7663rd | |
| Isolated primes | 42372nd | 42394th |
| Primes | 54035th | 54065th |
| Roman numberals | ||
| Base 2 | 101000101010000110112 | 101000101011111011112 |
| Base 3 | 10202112022113 | 10202121020113 |
| Base 4 | 22022201234 | 22022332334 |
| Base 5 | 1323040245 | 1323124125 |
| Base 6 | 221355516 | 221420516 |
| Base 7 | 54430457 | 54443147 |
| Base 8 | 24250338 | 24257578 |
| Base 9 | 12246849 | 12253649 |
| Base 10 | 66613910 | 66660710 |
| Base 11 | 41553111 | 41591711 |
| Base 12 | 2815b712 | 28192712 |
| Base 13 | 1a428613 | 1a455613 |
| Base 14 | 134a9514 | 134d0b14 |
| Base 15 | d259415 | d27a715 |
| Base 16 | a2a1b16 | a2bef16 |