Compare 664687 vs 666139
| Property | 664687 | 666139 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6646871 | 6661391 |
| Prime factorization | 664687 | 666139 |
| Divisors count | 2 | 2 |
| Divisors | 1, 664687 | 1, 666139 |
| Number of properties | 7 | 4 |
| Additive primes | 21049th | 21093rd |
| Cousin primes (1st member) | 5814th | 5825th |
| Isolated primes | 42282nd | 42372nd |
| Lucky primes | 6168th | |
| Primes | 53925th | 54035th |
| Prime triplets (1st member) | 2122nd | |
| Sexy primes (1st member) | 11639th | |
| Roman numberals | ||
| Base 2 | 101000100100011011112 | 101000101010000110112 |
| Base 3 | 10202022100013 | 10202112022113 |
| Base 4 | 22021012334 | 22022201234 |
| Base 5 | 1322322225 | 1323040245 |
| Base 6 | 221251316 | 221355516 |
| Base 7 | 54356027 | 54430457 |
| Base 8 | 24221578 | 24250338 |
| Base 9 | 12227019 | 12246849 |
| Base 10 | 66468710 | 66613910 |
| Base 11 | 41443111 | 41553111 |
| Base 12 | 2807a712 | 2815b712 |
| Base 13 | 1a370a13 | 1a428613 |
| Base 14 | 13433914 | 134a9514 |
| Base 15 | d1e2715 | d259415 |
| Base 16 | a246f16 | a2a1b16 |