Compare 21921 vs 21929
| Property | 21921 | 21929 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 31 × 73071 | 219291 |
| Prime factorization | 3 × 7307 | 21929 |
| Divisors count | 4 | 2 |
| Divisors | 1, 3, 7307, 21921 | 1, 21929 |
| Number of properties | 1 | 5 |
| Additive primes | 1137th | |
| Harmonic primes | 905th | |
| Isolated primes | 1715th | |
| Primes | 2458th | |
| Pythagorean primes | 1219th | |
| Semiprimes | 5534th | |
| Roman numberals | ||
| Base 2 | 1010101101000012 | 1010101101010012 |
| Base 3 | 10100012203 | 10100020123 |
| Base 4 | 111122014 | 111122214 |
| Base 5 | 12001415 | 12002045 |
| Base 6 | 2452536 | 2453056 |
| Base 7 | 1206247 | 1206357 |
| Base 8 | 526418 | 526518 |
| Base 9 | 330569 | 330659 |
| Base 10 | 2192110 | 2192910 |
| Base 11 | 1551911 | 1552611 |
| Base 12 | 1082912 | 1083512 |
| Base 13 | 9c9313 | 9c9b13 |
| Base 14 | 7dbb14 | 7dc514 |
| Base 15 | 676615 | 676e15 |
| Base 16 | 55a116 | 55a916 |