Compare 666143 vs 666269
| Property | 666143 | 666269 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6661431 | 6662691 |
| Prime factorization | 666143 | 666269 |
| Divisors count | 2 | 2 |
| Divisors | 1, 666143 | 1, 666269 |
| Number of properties | 4 | 3 |
| Chen primes | 21131st | |
| Cousin primes (2nd member) | 5825th | |
| Isolated primes | 42373rd | 42381st |
| Primes | 54036th | 54044th |
| Safe primes | 3118th | |
| Roman numberals | ||
| Base 2 | 101000101010000111112 | 101000101010100111012 |
| Base 3 | 10202112022223 | 10202112211223 |
| Base 4 | 22022201334 | 22022221314 |
| Base 5 | 1323040335 | 1323100345 |
| Base 6 | 221355556 | 221403256 |
| Base 7 | 54430527 | 54433227 |
| Base 8 | 24250378 | 24252358 |
| Base 9 | 12246889 | 12248489 |
| Base 10 | 66614310 | 66626910 |
| Base 11 | 41553511 | 41563a11 |
| Base 12 | 2815bb12 | 2816a512 |
| Base 13 | 1a428a13 | 1a435613 |
| Base 14 | 134a9914 | 134b4914 |
| Base 15 | d259815 | d262e15 |
| Base 16 | a2a1f16 | a2a9d16 |