Compare 221807 vs 221999
| Property | 221807 | 221999 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 2218071 | 2219991 |
| Prime factorization | 221807 | 221999 |
| Divisors count | 2 | 2 |
| Divisors | 1, 221807 | 1, 221999 |
| Number of properties | 6 | 4 |
| Chen primes | 8234th | 8241st |
| Harmonic primes | 7418th | |
| Isolated primes | 15073rd | 15083rd |
| Primes | 19762nd | 19776th |
| Sexy primes (1st member) | 4676th | |
| Sophie germain primes | 2240th | |
| Ulam primes | 1413th | |
| Roman numberals | ||
| Base 2 | 1101100010011011112 | 1101100011001011112 |
| Base 3 | 1020210210023 | 1020211120123 |
| Base 4 | 3120212334 | 3120302334 |
| Base 5 | 240442125 | 241004445 |
| Base 6 | 44305156 | 44314356 |
| Base 7 | 16124457 | 16131417 |
| Base 8 | 6611578 | 6614578 |
| Base 9 | 3672329 | 3674659 |
| Base 10 | 22180710 | 22199910 |
| Base 11 | 14171311 | 14187811 |
| Base 12 | a843b12 | a857b12 |
| Base 13 | 79c6113 | 7a07b13 |
| Base 14 | 5ab9514 | 5ac9114 |
| Base 15 | 45ac215 | 45b9e15 |
| Base 16 | 3626f16 | 3632f16 |