Compare 664621 vs 664630
| Property | 664621 | 664630 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 6646211 | 21 × 51 × 664631 |
| Prime factorization | 664621 | 2 × 5 × 66463 |
| Divisors count | 2 | 8 |
| Divisors | 1, 664621 | 1, 2, 5, 10, 66463, 132926, 332315, 664630 |
| Number of properties | 3 | 0 |
| Happy primes | 7643rd | |
| Primes | 53918th | |
| Twin primes (2nd member) | 5820th | |
| Roman numberals | ||
| Base 2 | 101000100100001011012 | 101000100100001101102 |
| Base 3 | 10202022001213 | 10202022002213 |
| Base 4 | 22021002314 | 22021003124 |
| Base 5 | 1322314415 | 1322320105 |
| Base 6 | 221245416 | 221245546 |
| Base 7 | 54354467 | 54354617 |
| Base 8 | 24220558 | 24220668 |
| Base 9 | 12226179 | 12226279 |
| Base 10 | 66462110 | 66463010 |
| Base 11 | 41438111 | 41438a11 |
| Base 12 | 28075112 | 28075a12 |
| Base 13 | 1a368913 | 1a369513 |
| Base 14 | 1342cd14 | 1342d814 |
| Base 15 | d1dd115 | d1dda15 |
| Base 16 | a242d16 | a243616 |