Compare 640939 vs 640949
| Property | 640939 | 640949 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 131 × 471 × 10491 | 6409491 |
| Prime factorization | 13 × 47 × 1049 | 640949 |
| Divisors count | 8 | 2 |
| Divisors | 1, 13, 47, 611, 1049, 13637, 49303, 640939 | 1, 640949 |
| Number of properties | 0 | 5 |
| Happy primes | 7420th | |
| Isolated primes | 40871st | |
| Primes | 52146th | |
| Sexy primes (2nd member) | 11299th | |
| Sophie germain primes | 5314th | |
| Roman numberals | ||
| Base 2 | 100111000111101010112 | 100111000111101101012 |
| Base 3 | 10121200121113 | 10121200122123 |
| Base 4 | 21301322234 | 21301323114 |
| Base 5 | 1310022245 | 1310022445 |
| Base 6 | 214231516 | 214232056 |
| Base 7 | 53064257 | 53064417 |
| Base 8 | 23436538 | 23436658 |
| Base 9 | 11761749 | 11761859 |
| Base 10 | 64093910 | 64094910 |
| Base 11 | 3a860211 | 3a861111 |
| Base 12 | 26aab712 | 26ab0512 |
| Base 13 | 19597013 | 19597a13 |
| Base 14 | 12981514 | 12982114 |
| Base 15 | c9d9415 | c9d9e15 |
| Base 16 | 9c7ab16 | 9c7b516 |