Compare 4018 vs 4021
| Property | 4018 | 4021 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 4 | 1 |
| Prime factorization | 21 × 72 × 411 | 40211 |
| Prime factorization | 2 × 7 × 7 × 41 | 4021 |
| Divisors count | 12 | 2 |
| Divisors | 1, 2, 7, 14, 41, 49, 82, 98, 287, 574, 2009, 4018 | 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 | MMMMXVIII | MMMMXXI |
| Base 2 | 1111101100102 | 1111101101012 |
| Base 3 | 121112113 | 121112213 |
| Base 4 | 3323024 | 3323114 |
| Base 5 | 1120335 | 1120415 |
| Base 6 | 303346 | 303416 |
| Base 7 | 145007 | 145037 |
| Base 8 | 76628 | 76658 |
| Base 9 | 54549 | 54579 |
| Base 10 | 401810 | 402110 |
| Base 11 | 302311 | 302611 |
| Base 12 | 23aa12 | 23b112 |
| Base 13 | 1aa113 | 1aa413 |
| Base 14 | 167014 | 167314 |
| Base 15 | 12cd15 | 12d115 |
| Base 16 | fb216 | fb516 |