Compare 666139 vs 666203
| Property | 666139 | 666203 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6661391 | 6662031 |
| Prime factorization | 666139 | 666203 |
| Divisors count | 2 | 2 |
| Divisors | 1, 666139 | 1, 666203 |
| Number of properties | 4 | 5 |
| Additive primes | 21093rd | 21096th |
| Chen primes | 21130th | |
| Cousin primes (1st member) | 5825th | |
| Isolated primes | 42372nd | 42378th |
| Primes | 54035th | 54041st |
| Safe primes | 3119th | |
| Roman numberals | ||
| Base 2 | 101000101010000110112 | 101000101010010110112 |
| Base 3 | 10202112022113 | 10202112120123 |
| Base 4 | 22022201234 | 22022211234 |
| Base 5 | 1323040245 | 1323043035 |
| Base 6 | 221355516 | 221401356 |
| Base 7 | 54430457 | 54431667 |
| Base 8 | 24250338 | 24251338 |
| Base 9 | 12246849 | 12247659 |
| Base 10 | 66613910 | 66620310 |
| Base 11 | 41553111 | 41558a11 |
| Base 12 | 2815b712 | 28164b12 |
| Base 13 | 1a428613 | 1a430513 |
| Base 14 | 134a9514 | 134add14 |
| Base 15 | d259415 | d25d815 |
| Base 16 | a2a1b16 | a2a5b16 |