Compare 663997 vs 664091
| Property | 663997 | 664091 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6639971 | 6640911 |
| Prime factorization | 663997 | 664091 |
| Divisors count | 2 | 2 |
| Divisors | 1, 663997 | 1, 664091 |
| Number of properties | 3 | 4 |
| Chen primes | 21070th | |
| Isolated primes | 42237th | 42243rd |
| Primes | 53868th | 53874th |
| Sexy primes (2nd member) | 11629th | |
| Sophie germain primes | 5477th | |
| Roman numberals | ||
| Base 2 | 101000100001101111012 | 101000100010000110112 |
| Base 3 | 10202012111113 | 10202012212223 |
| Base 4 | 22020123314 | 22020201234 |
| Base 5 | 1322214425 | 1322223315 |
| Base 6 | 221220216 | 221222556 |
| Base 7 | 54335657 | 54340617 |
| Base 8 | 24206758 | 24210338 |
| Base 9 | 12217449 | 12218589 |
| Base 10 | 66399710 | 66409110 |
| Base 11 | 41396411 | 413a3a11 |
| Base 12 | 28031112 | 28038b12 |
| Base 13 | 1a32c913 | 1a336c13 |
| Base 14 | 133da514 | 13403114 |
| Base 15 | d1b1715 | d1b7b15 |
| Base 16 | a21bd16 | a221b16 |