Compare 128879 vs 129221
| Property | 128879 | 129221 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 1288791 | 1292211 |
| Prime factorization | 128879 | 129221 |
| Divisors count | 2 | 2 |
| Divisors | 1, 128879 | 1, 129221 |
| Number of properties | 8 | 7 |
| Additive primes | 4986th | |
| Chen primes | 5216th | 5229th |
| Emirps | 2432nd | 2441st |
| Happy primes | 1875th | |
| Harmonic primes | 4542nd | |
| Isolated primes | 9057th | |
| Primes | 12064th | 12095th |
| Pythagorean primes | 6018th | |
| Safe primes | 820th | |
| Sexy primes (2nd member) | 2995th | |
| Sophie germain primes | 1450th | |
| Twin primes (1st member) | 1509th | |
| Roman numberals | ||
| Base 2 | 111110111011011112 | 111111000110001012 |
| Base 3 | 201122100223 | 201200202223 |
| Base 4 | 1331312334 | 1332030114 |
| Base 5 | 131110045 | 131133415 |
| Base 6 | 24323556 | 24341256 |
| Base 7 | 10445127 | 10455117 |
| Base 8 | 3735578 | 3743058 |
| Base 9 | 2157089 | 2162289 |
| Base 10 | 12887910 | 12922110 |
| Base 11 | 8891311 | 890a411 |
| Base 12 | 626bb12 | 6294512 |
| Base 13 | 4687a13 | 46a8113 |
| Base 14 | 34d7914 | 3514114 |
| Base 15 | 282be15 | 2844b15 |
| Base 16 | 1f76f16 | 1f8c516 |