Compare 640457 vs 640468
| Property | 640457 | 640468 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 2 |
| Total factors | 1 | 3 |
| Prime factorization | 6404571 | 22 × 1601171 |
| Prime factorization | 640457 | 2 × 2 × 160117 |
| Divisors count | 2 | 6 |
| Divisors | 1, 640457 | 1, 2, 4, 160117, 320234, 640468 |
| Number of properties | 4 | 0 |
| Chen primes | 20391st | |
| Isolated primes | 40839th | |
| Primes | 52110th | |
| Sexy primes (1st member) | 11290th | |
| Roman numberals | ||
| Base 2 | 100111000101110010012 | 100111000101110101002 |
| Base 3 | 10121121121223 | 10121121200013 |
| Base 4 | 21301130214 | 21301131104 |
| Base 5 | 1304433125 | 1304433335 |
| Base 6 | 214210256 | 214210446 |
| Base 7 | 53051367 | 53051537 |
| Base 8 | 23427118 | 23427248 |
| Base 9 | 11754789 | 11755019 |
| Base 10 | 64045710 | 64046810 |
| Base 11 | 3a820411 | 3a821411 |
| Base 12 | 26a77512 | 26a78412 |
| Base 13 | 19568c13 | 19569a13 |
| Base 14 | 12958d14 | 12959a14 |
| Base 15 | c9b7215 | c9b7d15 |
| Base 16 | 9c5c916 | 9c5d416 |