Compare 4021 vs 4391
| Property | 4021 | 4391 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 40211 | 43911 |
| Prime factorization | 4021 | 4391 |
| Divisors count | 2 | 2 |
| Divisors | 1, 4021 | 1, 4391 |
| Number of properties | 6 | 7 |
| Additive primes | 285th | 306th |
| Chen primes | 344th | |
| Harmonic primes | 199th | 218th |
| Isolated primes | 369th | |
| Primes | 556th | 598th |
| Pythagorean primes | 272nd | |
| Sexy primes (1st member) | 206th | 217th |
| Sophie germain primes | 108th | |
| Twin primes (2nd member) | 105th | |
| Roman numberals | MMMMXXI | MMMMCCCXCI |
| Base 2 | 1111101101012 | 10001001001112 |
| Base 3 | 121112213 | 200001223 |
| Base 4 | 3323114 | 10102134 |
| Base 5 | 1120415 | 1200315 |
| Base 6 | 303416 | 321556 |
| Base 7 | 145037 | 155427 |
| Base 8 | 76658 | 104478 |
| Base 9 | 54579 | 60189 |
| Base 10 | 402110 | 439110 |
| Base 11 | 302611 | 333211 |
| Base 12 | 23b112 | 265b12 |
| Base 13 | 1aa413 | 1cca13 |
| Base 14 | 167314 | 185914 |
| Base 15 | 12d115 | 147b15 |
| Base 16 | fb516 | 112716 |