Compare 4015 vs 4021
| Property | 4015 | 4021 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 51 × 111 × 731 | 40211 |
| Prime factorization | 5 × 11 × 73 | 4021 |
| Divisors count | 8 | 2 |
| Divisors | 1, 5, 11, 55, 73, 365, 803, 4015 | 1, 4021 |
| Number of properties | 0 | 6 |
| Additive primes | 285th | |
| Harmonic primes | 199th | |
| Primes | 556th | |
| Pythagorean primes | 272nd | |
| Sexy primes (1st member) | 206th | |
| Twin primes (2nd member) | 105th | |
| Roman numberals | MMMMXV | MMMMXXI |
| Base 2 | 1111101011112 | 1111101101012 |
| Base 3 | 121112013 | 121112213 |
| Base 4 | 3322334 | 3323114 |
| Base 5 | 1120305 | 1120415 |
| Base 6 | 303316 | 303416 |
| Base 7 | 144647 | 145037 |
| Base 8 | 76578 | 76658 |
| Base 9 | 54519 | 54579 |
| Base 10 | 401510 | 402110 |
| Base 11 | 302011 | 302611 |
| Base 12 | 23a712 | 23b112 |
| Base 13 | 1a9b13 | 1aa413 |
| Base 14 | 166b14 | 167314 |
| Base 15 | 12ca15 | 12d115 |
| Base 16 | faf16 | fb516 |