Compare 221457 vs 221461
| Property | 221457 | 221461 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 31 × 738191 | 2214611 |
| Prime factorization | 3 × 73819 | 221461 |
| Divisors count | 4 | 2 |
| Divisors | 1, 3, 73819, 221457 | 1, 221461 |
| Number of properties | 1 | 5 |
| Harmonic primes | 7409th | |
| Isolated primes | 15051st | |
| Long primes | 7386th | |
| Primes | 19732nd | |
| Pythagorean primes | 9844th | |
| Semiprimes | 49834th | |
| Roman numberals | ||
| Base 2 | 1101100001000100012 | 1101100001000101012 |
| Base 3 | 1020202100103 | 1020202100213 |
| Base 4 | 3120101014 | 3120101114 |
| Base 5 | 240413125 | 240413215 |
| Base 6 | 44251336 | 44251416 |
| Base 7 | 16114357 | 16114427 |
| Base 8 | 6604218 | 6604258 |
| Base 9 | 3667039 | 3667079 |
| Base 10 | 22145710 | 22146110 |
| Base 11 | 14142511 | 14142911 |
| Base 12 | a81a912 | a81b112 |
| Base 13 | 79a5213 | 79a5613 |
| Base 14 | 5a9c514 | 5a9c914 |
| Base 15 | 4593c15 | 4594115 |
| Base 16 | 3611116 | 3611516 |