Compare 4021 vs 4031
| Property | 4021 | 4031 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 40211 | 291 × 1391 |
| Prime factorization | 4021 | 29 × 139 |
| Divisors count | 2 | 4 |
| Divisors | 1, 4021 | 1, 29, 139, 4031 |
| Number of properties | 6 | 1 |
| Additive primes | 285th | |
| Harmonic primes | 199th | |
| Primes | 556th | |
| Pythagorean primes | 272nd | |
| Semiprimes | 1109th | |
| Sexy primes (1st member) | 206th | |
| Twin primes (2nd member) | 105th | |
| Roman numberals | MMMMXXI | MMMMXXXI |
| Base 2 | 1111101101012 | 1111101111112 |
| Base 3 | 121112213 | 121120223 |
| Base 4 | 3323114 | 3323334 |
| Base 5 | 1120415 | 1121115 |
| Base 6 | 303416 | 303556 |
| Base 7 | 145037 | 145167 |
| Base 8 | 76658 | 76778 |
| Base 9 | 54579 | 54689 |
| Base 10 | 402110 | 403110 |
| Base 11 | 302611 | 303511 |
| Base 12 | 23b112 | 23bb12 |
| Base 13 | 1aa413 | 1ab113 |
| Base 14 | 167314 | 167d14 |
| Base 15 | 12d115 | 12db15 |
| Base 16 | fb516 | fbf16 |