Compare 640949 vs 642881
| Property | 640949 | 642881 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6409491 | 6428811 |
| Prime factorization | 640949 | 642881 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640949 | 1, 642881 |
| Number of properties | 5 | 6 |
| Additive primes | 20433rd | |
| Chen primes | 20450th | |
| Cousin primes (2nd member) | 5645th | |
| Happy primes | 7420th | |
| Isolated primes | 40871st | 40972nd |
| Primes | 52146th | 52281st |
| Sexy primes (2nd member) | 11299th | |
| Sophie germain primes | 5314th | 5326th |
| Roman numberals | ||
| Base 2 | 100111000111101101012 | 100111001111010000012 |
| Base 3 | 10121200122123 | 10121222121023 |
| Base 4 | 21301323114 | 21303310014 |
| Base 5 | 1310022445 | 1310330115 |
| Base 6 | 214232056 | 214401456 |
| Base 7 | 53064417 | 53152017 |
| Base 8 | 23436658 | 23475018 |
| Base 9 | 11761859 | 11787729 |
| Base 10 | 64094910 | 64288110 |
| Base 11 | 3a861111 | 3aa00811 |
| Base 12 | 26ab0512 | 27005512 |
| Base 13 | 19597a13 | 19680513 |
| Base 14 | 12982114 | 12a40114 |
| Base 15 | c9d9e15 | ca73b15 |
| Base 16 | 9c7b516 | 9cf4116 |