Compare 664418 vs 664421
| Property | 664418 | 664421 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 21 × 711 × 46791 | 6644211 |
| Prime factorization | 2 × 71 × 4679 | 664421 |
| Divisors count | 8 | 2 |
| Divisors | 1, 2, 71, 142, 4679, 9358, 332209, 664418 | 1, 664421 |
| Number of properties | 0 | 8 |
| Additive primes | 21039th | |
| Chen primes | 21084th | |
| Happy primes | 7641st | |
| Isolated primes | 42262nd | |
| Primes | 53899th | |
| Sexy primes (1st member) | 11633rd | |
| Sophie germain primes | 5482nd | |
| Super primes | 5492nd | |
| Roman numberals | ||
| Base 2 | 101000100011011000102 | 101000100011011001012 |
| Base 3 | 10202021020023 | 10202021020123 |
| Base 4 | 22020312024 | 22020312114 |
| Base 5 | 1322301335 | 1322301415 |
| Base 6 | 221240026 | 221240056 |
| Base 7 | 54350367 | 54350427 |
| Base 8 | 24215428 | 24215458 |
| Base 9 | 12223629 | 12223659 |
| Base 10 | 66441810 | 66442110 |
| Base 11 | 41420711 | 41420a11 |
| Base 12 | 28060212 | 28060512 |
| Base 13 | 1a356113 | 1a356413 |
| Base 14 | 1341c614 | 1341c914 |
| Base 15 | d1ce815 | d1ceb15 |
| Base 16 | a236216 | a236516 |