Compare 642809 vs 642947
| Property | 642809 | 642947 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6428091 | 6429471 |
| Prime factorization | 642809 | 642947 |
| Divisors count | 2 | 2 |
| Divisors | 1, 642809 | 1, 642947 |
| Number of properties | 4 | 4 |
| Additive primes | 20432nd | |
| Chen primes | 20451st | |
| Isolated primes | 40968th | 40977th |
| Primes | 52275th | 52286th |
| Sexy primes (1st member) | 11327th | |
| Sophie germain primes | 5325th | |
| Roman numberals | ||
| Base 2 | 100111001110111110012 | 100111001111100000112 |
| Base 3 | 10121222022023 | 10121222212123 |
| Base 4 | 21303233214 | 21303320034 |
| Base 5 | 1310322145 | 1310332425 |
| Base 6 | 214355456 | 214403356 |
| Base 7 | 53150367 | 53153247 |
| Base 8 | 23473718 | 23476038 |
| Base 9 | 11786829 | 11788559 |
| Base 10 | 64280910 | 64294710 |
| Base 11 | 3a9a5211 | 3aa06811 |
| Base 12 | 26bbb512 | 2700ab12 |
| Base 13 | 19677b13 | 19685613 |
| Base 14 | 12a38d14 | 12a44b14 |
| Base 15 | ca6de15 | ca78215 |
| Base 16 | 9cef916 | 9cf8316 |