Compare 21142 vs 21149
| Property | 21142 | 21149 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 4 | 1 |
| Prime factorization | 21 × 111 × 312 | 211491 |
| Prime factorization | 2 × 11 × 31 × 31 | 21149 |
| Divisors count | 12 | 2 |
| Divisors | 1, 2, 11, 22, 31, 62, 341, 682, 961, 1922, 10571, 21142 | 1, 21149 |
| Number of properties | 0 | 11 |
| Additive primes | 1104th | |
| Chen primes | 1168th | |
| Happy primes | 394th | |
| Isolated primes | 1658th | |
| Long primes | 904th | |
| Primes | 2377th | |
| Pythagorean primes | 1180th | |
| Sexy primes (2nd member) | 719th | |
| Sophie germain primes | 344th | |
| Super primes | 352nd | |
| Ulam primes | 178th | |
| Roman numberals | ||
| Base 2 | 1010010100101102 | 1010010100111012 |
| Base 3 | 10020000013 | 10020000223 |
| Base 4 | 110221124 | 110221314 |
| Base 5 | 11340325 | 11340445 |
| Base 6 | 2415146 | 2415256 |
| Base 7 | 1154327 | 1154427 |
| Base 8 | 512268 | 512358 |
| Base 9 | 320019 | 320089 |
| Base 10 | 2114210 | 2114910 |
| Base 11 | 1498011 | 1498711 |
| Base 12 | 1029a12 | 102a512 |
| Base 13 | 981413 | 981b13 |
| Base 14 | 79c214 | 79c914 |
| Base 15 | 63e715 | 63ee15 |
| Base 16 | 529616 | 529d16 |