Compare 640949 vs 640955
| Property | 640949 | 640955 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 6409491 | 51 × 71 × 183131 |
| Prime factorization | 640949 | 5 × 7 × 18313 |
| Divisors count | 2 | 8 |
| Divisors | 1, 640949 | 1, 5, 7, 35, 18313, 91565, 128191, 640955 |
| Number of properties | 5 | 0 |
| Happy primes | 7420th | |
| Isolated primes | 40871st | |
| Primes | 52146th | |
| Sexy primes (2nd member) | 11299th | |
| Sophie germain primes | 5314th | |
| Roman numberals | ||
| Base 2 | 100111000111101101012 | 100111000111101110112 |
| Base 3 | 10121200122123 | 10121200200023 |
| Base 4 | 21301323114 | 21301323234 |
| Base 5 | 1310022445 | 1310023105 |
| Base 6 | 214232056 | 214232156 |
| Base 7 | 53064417 | 53064507 |
| Base 8 | 23436658 | 23436738 |
| Base 9 | 11761859 | 11762029 |
| Base 10 | 64094910 | 64095510 |
| Base 11 | 3a861111 | 3a861711 |
| Base 12 | 26ab0512 | 26ab0b12 |
| Base 13 | 19597a13 | 19598313 |
| Base 14 | 12982114 | 12982714 |
| Base 15 | c9d9e15 | c9da515 |
| Base 16 | 9c7b516 | 9c7bb16 |