Compare 665857 vs 666139
| Property | 665857 | 666139 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6658571 | 6661391 |
| Prime factorization | 665857 | 666139 |
| Divisors count | 2 | 2 |
| Divisors | 1, 665857 | 1, 666139 |
| Number of properties | 4 | 4 |
| Additive primes | 21083rd | 21093rd |
| Chen primes | 21122nd | |
| Cousin primes (1st member) | 5825th | |
| Isolated primes | 42357th | 42372nd |
| Primes | 54014th | 54035th |
| Roman numberals | ||
| Base 2 | 101000101001000000012 | 101000101010000110112 |
| Base 3 | 10202111011013 | 10202112022113 |
| Base 4 | 22022100014 | 22022201234 |
| Base 5 | 1323014125 | 1323040245 |
| Base 6 | 221344016 | 221355516 |
| Base 7 | 54421637 | 54430457 |
| Base 8 | 24244018 | 24250338 |
| Base 9 | 12243419 | 12246849 |
| Base 10 | 66585710 | 66613910 |
| Base 11 | 4152a511 | 41553111 |
| Base 12 | 28140112 | 2815b712 |
| Base 13 | 1a40ca13 | 1a428613 |
| Base 14 | 13493314 | 134a9514 |
| Base 15 | d245715 | d259415 |
| Base 16 | a290116 | a2a1b16 |