Compare 6421 vs 6637
| Property | 6421 | 6637 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 64211 | 66371 |
| Prime factorization | 6421 | 6637 |
| Divisors count | 2 | 2 |
| Divisors | 1, 6421 | 1, 6637 |
| Number of properties | 7 | 6 |
| Additive primes | 419th | |
| Chen primes | 456th | 467th |
| Good primes | 132nd | |
| Happy primes | 146th | |
| Harmonic primes | 301st | |
| Isolated primes | 538th | 553rd |
| Primes | 835th | 856th |
| Pythagorean primes | 410th | 421st |
| Sexy primes (1st member) | 302nd | |
| Roman numberals | ||
| Base 2 | 11001000101012 | 11001111011012 |
| Base 3 | 222102113 | 1000022113 |
| Base 4 | 12101114 | 12132314 |
| Base 5 | 2011415 | 2030225 |
| Base 6 | 454216 | 504216 |
| Base 7 | 245027 | 252317 |
| Base 8 | 144258 | 147558 |
| Base 9 | 87249 | 100849 |
| Base 10 | 642110 | 663710 |
| Base 11 | 490811 | 4a9411 |
| Base 12 | 387112 | 3a1112 |
| Base 13 | 2bcc13 | 303713 |
| Base 14 | 24a914 | 25c114 |
| Base 15 | 1d8115 | 1e7715 |
| Base 16 | 191516 | 19ed16 |