Compare 640369 vs 640379
| Property | 640369 | 640379 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 6403691 | 411 × 156191 |
| Prime factorization | 640369 | 41 × 15619 |
| Divisors count | 2 | 4 |
| Divisors | 1, 640369 | 1, 41, 15619, 640379 |
| Number of properties | 4 | 1 |
| Isolated primes | 40836th | |
| Lucky primes | 5982nd | |
| Primes | 52107th | |
| Semiprimes | 137218th | |
| Sexy primes (2nd member) | 11289th | |
| Roman numberals | ||
| Base 2 | 100111000101011100012 | 100111000101011110112 |
| Base 3 | 10121121021013 | 10121121022023 |
| Base 4 | 21301113014 | 21301113234 |
| Base 5 | 1304424345 | 1304430045 |
| Base 6 | 214204016 | 214204156 |
| Base 7 | 53046527 | 53046657 |
| Base 8 | 23425618 | 23425738 |
| Base 9 | 11753719 | 11753829 |
| Base 10 | 64036910 | 64037910 |
| Base 11 | 3a813411 | 3a814311 |
| Base 12 | 26a70112 | 26a70b12 |
| Base 13 | 19562213 | 19562c13 |
| Base 14 | 12952914 | 12953514 |
| Base 15 | c9b1415 | c9b1e15 |
| Base 16 | 9c57116 | 9c57b16 |