Compare 667979 vs 667991
| Property | 667979 | 667991 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 131 × 513831 | 6679911 |
| Prime factorization | 13 × 51383 | 667991 |
| Divisors count | 4 | 2 |
| Divisors | 1, 13, 51383, 667979 | 1, 667991 |
| Number of properties | 1 | 4 |
| Chen primes | 21176th | |
| Cousin primes (2nd member) | 5841st | |
| Isolated primes | 42471st | |
| Primes | 54168th | |
| Semiprimes | 142868th | |
| Roman numberals | ||
| Base 2 | 101000110001010010112 | 101000110001010101112 |
| Base 3 | 10202210212223 | 10202210221023 |
| Base 4 | 22030110234 | 22030111134 |
| Base 5 | 1323334045 | 1323334315 |
| Base 6 | 221522556 | 221523156 |
| Base 7 | 54513147 | 54513327 |
| Base 8 | 24305138 | 24305278 |
| Base 9 | 12272589 | 12272729 |
| Base 10 | 66797910 | 66799110 |
| Base 11 | 41695411 | 41696511 |
| Base 12 | 28268b12 | 28269b12 |
| Base 13 | 1a507013 | 1a507c13 |
| Base 14 | 13560b14 | 13561914 |
| Base 15 | d2dbe15 | d2dcb15 |
| Base 16 | a314b16 | a315716 |