Compare 220721 vs 221621
| Property | 220721 | 221621 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 2207211 | 2216211 |
| Prime factorization | 220721 | 221621 |
| Divisors count | 2 | 2 |
| Divisors | 1, 220721 | 1, 221621 |
| Number of properties | 6 | 7 |
| Chen primes | 8202nd | 8229th |
| Harmonic primes | 7380th | 7412th |
| Isolated primes | 15009th | |
| Long primes | 7390th | |
| Primes | 19672nd | 19745th |
| Pythagorean primes | 9814th | 9852nd |
| Sophie germain primes | 2231st | 2239th |
| Twin primes (1st member) | 2343rd | |
| Roman numberals | ||
| Base 2 | 1101011110001100012 | 1101100001101101012 |
| Base 3 | 1020122022123 | 1020210000123 |
| Base 4 | 3113203014 | 3120123114 |
| Base 5 | 240303415 | 240424415 |
| Base 6 | 44215056 | 44300056 |
| Base 7 | 16063347 | 16120617 |
| Base 8 | 6570618 | 6606658 |
| Base 9 | 3656859 | 3670059 |
| Base 10 | 22072110 | 22162110 |
| Base 11 | 14091611 | 14156411 |
| Base 12 | a789512 | a830512 |
| Base 13 | 7960713 | 79b4a13 |
| Base 14 | 5a61b14 | 5aaa114 |
| Base 15 | 455eb15 | 459eb15 |
| Base 16 | 35e3116 | 361b516 |