Compare 6415 vs 6421
| Property | 6415 | 6421 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 51 × 12831 | 64211 |
| Prime factorization | 5 × 1283 | 6421 |
| Divisors count | 4 | 2 |
| Divisors | 1, 5, 1283, 6415 | 1, 6421 |
| Number of properties | 1 | 7 |
| Additive primes | 419th | |
| Chen primes | 456th | |
| Harmonic primes | 301st | |
| Isolated primes | 538th | |
| Primes | 835th | |
| Pythagorean primes | 410th | |
| Semiprimes | 1723rd | |
| Sexy primes (1st member) | 302nd | |
| Roman numberals | ||
| Base 2 | 11001000011112 | 11001000101012 |
| Base 3 | 222101213 | 222102113 |
| Base 4 | 12100334 | 12101114 |
| Base 5 | 2011305 | 2011415 |
| Base 6 | 454116 | 454216 |
| Base 7 | 244637 | 245027 |
| Base 8 | 144178 | 144258 |
| Base 9 | 87179 | 87249 |
| Base 10 | 641510 | 642110 |
| Base 11 | 490211 | 490811 |
| Base 12 | 386712 | 387112 |
| Base 13 | 2bc613 | 2bcc13 |
| Base 14 | 24a314 | 24a914 |
| Base 15 | 1d7a15 | 1d8115 |
| Base 16 | 190f16 | 191516 |