Compare 20 vs 29
| Property | 20 | 29 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 2 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 22 × 51 | 291 |
| Prime factorization | 2 × 2 × 5 | 29 |
| Divisors count | 6 | 2 |
| Divisors | 1, 2, 4, 5, 10, 20 | 1, 29 |
| Number of properties | 0 | 14 |
| Additive primes | 7th | |
| Chen primes | 10th | |
| Good primes | 4th | |
| Long primes | 5th | |
| Lucas primes | 5th | |
| Primes | 10th | |
| Pythagorean primes | 4th | |
| Right-truncatable primes | 6th | |
| Sexy primes (2nd member) | 6th | |
| Sexy prime quadrupletss (4th member) | 2nd | |
| Sexy prime triplets (3rd member) | 4th | |
| Solinas primes | 9th | |
| Sophie germain primes | 6th | |
| Twin primes (1st member) | 5th | |
| Roman numberals | XX | XXIX |
| Base 2 | 101002 | 111012 |
| Base 3 | 2023 | 10023 |
| Base 4 | 1104 | 1314 |
| Base 5 | 405 | 1045 |
| Base 6 | 326 | 456 |
| Base 7 | 267 | 417 |
| Base 8 | 248 | 358 |
| Base 9 | 229 | 329 |
| Base 10 | 2010 | 2910 |
| Base 11 | 1911 | 2711 |
| Base 12 | 1812 | 2512 |
| Base 13 | 1713 | 2313 |
| Base 14 | 1614 | 2114 |
| Base 15 | 1515 | 1e15 |
| Base 16 | 1416 | 1d16 |