Compare 666219 vs 666229
| Property | 666219 | 666229 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 31 × 2220731 | 6662291 |
| Prime factorization | 3 × 222073 | 666229 |
| Divisors count | 4 | 2 |
| Divisors | 1, 3, 222073, 666219 | 1, 666229 |
| Number of properties | 1 | 4 |
| Additive primes | 21097th | |
| Cousin primes (1st member) | 5827th | |
| Isolated primes | 42379th | |
| Primes | 54042nd | |
| Semiprimes | 142500th | |
| Roman numberals | ||
| Base 2 | 101000101010011010112 | 101000101010011101012 |
| Base 3 | 10202112122103 | 10202112200113 |
| Base 4 | 22022212234 | 22022213114 |
| Base 5 | 1323043345 | 1323044045 |
| Base 6 | 221402036 | 221402216 |
| Base 7 | 54432217 | 54432347 |
| Base 8 | 24251538 | 24251658 |
| Base 9 | 12247839 | 12248049 |
| Base 10 | 66621910 | 66622910 |
| Base 11 | 4155a411 | 41560311 |
| Base 12 | 28166312 | 28167112 |
| Base 13 | 1a431813 | 1a432513 |
| Base 14 | 134b1114 | 134b1b14 |
| Base 15 | d25e915 | d260415 |
| Base 16 | a2a6b16 | a2a7516 |