Compare 666139 vs 666649
| Property | 666139 | 666649 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6661391 | 6666491 |
| Prime factorization | 666139 | 666649 |
| Divisors count | 2 | 2 |
| Divisors | 1, 666139 | 1, 666649 |
| Number of properties | 4 | 6 |
| Additive primes | 21093rd | 21105th |
| Cousin primes (1st member) | 5825th | |
| Isolated primes | 42372nd | |
| Primes | 54035th | 54069th |
| Prime triplets (3rd member) | 2130th | |
| Sexy primes (2nd member) | 11668th | |
| Sexy prime triplets (3rd member) | 2126th | |
| Twin primes (2nd member) | 5837th | |
| Roman numberals | ||
| Base 2 | 101000101010000110112 | 101000101100000110012 |
| Base 3 | 10202112022113 | 10202121102013 |
| Base 4 | 22022201234 | 22023001214 |
| Base 5 | 1323040245 | 1323130445 |
| Base 6 | 221355516 | 221422016 |
| Base 7 | 54430457 | 54444047 |
| Base 8 | 24250338 | 24260318 |
| Base 9 | 12246849 | 12254219 |
| Base 10 | 66613910 | 66664910 |
| Base 11 | 41553111 | 41595511 |
| Base 12 | 2815b712 | 28196112 |
| Base 13 | 1a428613 | 1a458913 |
| Base 14 | 134a9514 | 134d3b14 |
| Base 15 | d259415 | d27d415 |
| Base 16 | a2a1b16 | a2c1916 |