Compare 667991 vs 668003
| Property | 667991 | 668003 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 6679911 | 71 × 954291 |
| Prime factorization | 667991 | 7 × 95429 |
| Divisors count | 2 | 4 |
| Divisors | 1, 667991 | 1, 7, 95429, 668003 |
| Number of properties | 4 | 1 |
| Chen primes | 21176th | |
| Cousin primes (2nd member) | 5841st | |
| Isolated primes | 42471st | |
| Primes | 54168th | |
| Semiprimes | 142874th | |
| Roman numberals | ||
| Base 2 | 101000110001010101112 | 101000110001011000112 |
| Base 3 | 10202210221023 | 10202210222123 |
| Base 4 | 22030111134 | 22030112034 |
| Base 5 | 1323334315 | 1323340035 |
| Base 6 | 221523156 | 221523356 |
| Base 7 | 54513327 | 54513507 |
| Base 8 | 24305278 | 24305438 |
| Base 9 | 12272729 | 12272859 |
| Base 10 | 66799110 | 66800310 |
| Base 11 | 41696511 | 41697611 |
| Base 12 | 28269b12 | 2826ab12 |
| Base 13 | 1a507c13 | 1a508b13 |
| Base 14 | 13561914 | 13562714 |
| Base 15 | d2dcb15 | d2dd815 |
| Base 16 | a315716 | a316316 |