Compare 666667 vs 667687
| Property | 666667 | 667687 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6666671 | 6676871 |
| Prime factorization | 666667 | 667687 |
| Divisors count | 2 | 2 |
| Divisors | 1, 666667 | 1, 667687 |
| Number of properties | 5 | 4 |
| Additive primes | 21106th | |
| Cousin primes (1st member) | 5831st | 5840th |
| Isolated primes | 42397th | 42454th |
| Lucky primes | 6184th | 6192nd |
| Primes | 54070th | 54145th |
| Roman numberals | ||
| Base 2 | 101000101100001010112 | 101000110000001001112 |
| Base 3 | 10202121111013 | 10202202200113 |
| Base 4 | 22023002234 | 22030002134 |
| Base 5 | 1323131325 | 1323312225 |
| Base 6 | 221422316 | 221510516 |
| Base 7 | 54444317 | 54504167 |
| Base 8 | 24260538 | 24300478 |
| Base 9 | 12254419 | 12268049 |
| Base 10 | 66666710 | 66768710 |
| Base 11 | 41597111 | 41670911 |
| Base 12 | 28197712 | 28248712 |
| Base 13 | 1a45a113 | 1a4ba713 |
| Base 14 | 134d5114 | 13547d14 |
| Base 15 | d27e715 | d2c7715 |
| Base 16 | a2c2b16 | a302716 |