Compare 220721 vs 221999
| Property | 220721 | 221999 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 2207211 | 2219991 |
| Prime factorization | 220721 | 221999 |
| Divisors count | 2 | 2 |
| Divisors | 1, 220721 | 1, 221999 |
| Number of properties | 6 | 4 |
| Chen primes | 8202nd | 8241st |
| Harmonic primes | 7380th | |
| Isolated primes | 15009th | 15083rd |
| Primes | 19672nd | 19776th |
| Pythagorean primes | 9814th | |
| Sophie germain primes | 2231st | 2240th |
| Roman numberals | ||
| Base 2 | 1101011110001100012 | 1101100011001011112 |
| Base 3 | 1020122022123 | 1020211120123 |
| Base 4 | 3113203014 | 3120302334 |
| Base 5 | 240303415 | 241004445 |
| Base 6 | 44215056 | 44314356 |
| Base 7 | 16063347 | 16131417 |
| Base 8 | 6570618 | 6614578 |
| Base 9 | 3656859 | 3674659 |
| Base 10 | 22072110 | 22199910 |
| Base 11 | 14091611 | 14187811 |
| Base 12 | a789512 | a857b12 |
| Base 13 | 7960713 | 7a07b13 |
| Base 14 | 5a61b14 | 5ac9114 |
| Base 15 | 455eb15 | 45b9e15 |
| Base 16 | 35e3116 | 3632f16 |