Compare 6440 vs 6449
| Property | 6440 | 6449 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 4 | 1 |
| Total factors | 6 | 1 |
| Prime factorization | 23 × 51 × 71 × 231 | 64491 |
| Prime factorization | 2 × 2 × 2 × 5 × 7 × 23 | 6449 |
| Divisors count | 32 | 2 |
| Divisors | 1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3220, 6440 | 1, 6449 |
| Number of properties | 0 | 6 |
| Additive primes | 421st | |
| Chen primes | 458th | |
| Primes | 837th | |
| Pythagorean primes | 411th | |
| Sophie germain primes | 142nd | |
| Twin primes (1st member) | 150th | |
| Roman numberals | ||
| Base 2 | 11001001010002 | 11001001100012 |
| Base 3 | 222111123 | 222112123 |
| Base 4 | 12102204 | 12103014 |
| Base 5 | 2012305 | 2012445 |
| Base 6 | 454526 | 455056 |
| Base 7 | 245307 | 245427 |
| Base 8 | 144508 | 144618 |
| Base 9 | 87459 | 87559 |
| Base 10 | 644010 | 644910 |
| Base 11 | 492511 | 493311 |
| Base 12 | 388812 | 389512 |
| Base 13 | 2c1513 | 2c2113 |
| Base 14 | 24c014 | 24c914 |
| Base 15 | 1d9515 | 1d9e15 |
| Base 16 | 192816 | 193116 |