Compare 221621 vs 221807
| Property | 221621 | 221807 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 2216211 | 2218071 |
| Prime factorization | 221621 | 221807 |
| Divisors count | 2 | 2 |
| Divisors | 1, 221621 | 1, 221807 |
| Number of properties | 7 | 6 |
| Chen primes | 8229th | 8234th |
| Harmonic primes | 7412th | 7418th |
| Isolated primes | 15073rd | |
| Long primes | 7390th | |
| Primes | 19745th | 19762nd |
| Pythagorean primes | 9852nd | |
| Sexy primes (1st member) | 4676th | |
| Sophie germain primes | 2239th | |
| Twin primes (1st member) | 2343rd | |
| Ulam primes | 1413th | |
| Roman numberals | ||
| Base 2 | 1101100001101101012 | 1101100010011011112 |
| Base 3 | 1020210000123 | 1020210210023 |
| Base 4 | 3120123114 | 3120212334 |
| Base 5 | 240424415 | 240442125 |
| Base 6 | 44300056 | 44305156 |
| Base 7 | 16120617 | 16124457 |
| Base 8 | 6606658 | 6611578 |
| Base 9 | 3670059 | 3672329 |
| Base 10 | 22162110 | 22180710 |
| Base 11 | 14156411 | 14171311 |
| Base 12 | a830512 | a843b12 |
| Base 13 | 79b4a13 | 79c6113 |
| Base 14 | 5aaa114 | 5ab9514 |
| Base 15 | 459eb15 | 45ac215 |
| Base 16 | 361b516 | 3626f16 |