Compare 621991 vs 621997
| Property | 621991 | 621997 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 1071 × 58131 | 6219971 |
| Prime factorization | 107 × 5813 | 621997 |
| Divisors count | 4 | 2 |
| Divisors | 1, 107, 5813, 621991 | 1, 621997 |
| Number of properties | 1 | 3 |
| Isolated primes | 39780th | |
| Left-truncatable primes | 524th | |
| Primes | 50759th | |
| Semiprimes | 133366th | |
| Roman numberals | ||
| Base 2 | 100101111101101001112 | 100101111101101011012 |
| Base 3 | 10111210122013 | 10111210122213 |
| Base 4 | 21133122134 | 21133122314 |
| Base 5 | 1244004315 | 1244004425 |
| Base 6 | 211553316 | 211553416 |
| Base 7 | 52002467 | 52002557 |
| Base 8 | 22766478 | 22766558 |
| Base 9 | 11471819 | 11471879 |
| Base 10 | 62199110 | 62199710 |
| Base 11 | 39534711 | 39535211 |
| Base 12 | 25bb4712 | 25bb5112 |
| Base 13 | 18a15613 | 18a15c13 |
| Base 14 | 12295d14 | 12296514 |
| Base 15 | c446115 | c446715 |
| Base 16 | 97da716 | 97dad16 |