Compare 161921 vs 161999
| Property | 161921 | 161999 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 1619211 | 1619991 |
| Prime factorization | 161921 | 161999 |
| Divisors count | 2 | 2 |
| Divisors | 1, 161921 | 1, 161999 |
| Number of properties | 5 | 4 |
| Chen primes | 6329th | 6332nd |
| Harmonic primes | 5564th | 5570th |
| Isolated primes | 11209th | |
| Primes | 14844th | 14852nd |
| Pythagorean primes | 7400th | |
| Twin primes (1st member) | 1821st | |
| Roman numberals | ||
| Base 2 | 1001111000100000012 | 1001111000110011112 |
| Base 3 | 220200100023 | 220200122223 |
| Base 4 | 2132020014 | 2132030334 |
| Base 5 | 201401415 | 201404445 |
| Base 6 | 32453456 | 32455556 |
| Base 7 | 12430347 | 12432057 |
| Base 8 | 4742018 | 4743178 |
| Base 9 | 2661029 | 2661889 |
| Base 10 | 16192110 | 16199910 |
| Base 11 | 10072111 | 10079211 |
| Base 12 | 7985512 | 798bb12 |
| Base 13 | 5891613 | 5897613 |
| Base 14 | 4301b14 | 4307514 |
| Base 15 | 32e9b15 | 32eee15 |
| Base 16 | 2788116 | 278cf16 |