Compare 72161 vs 72166
| Property | 72161 | 72166 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 721611 | 21 × 360831 |
| Prime factorization | 72161 | 2 × 36083 |
| Divisors count | 2 | 4 |
| Divisors | 1, 72161 | 1, 2, 36083, 72166 |
| Number of properties | 10 | 1 |
| Additive primes | 3020th | |
| Emirps | 1052nd | |
| Happy primes | 1108th | |
| Harmonic primes | 2699th | |
| Isolated primes | 5277th | |
| Primes | 7142nd | |
| Pythagorean primes | 3556th | |
| Semiprimes | 17159th | |
| Sexy primes (1st member) | 1875th | |
| Sexy prime triplets (1st member) | 422nd | |
| Sophie germain primes | 898th | |
| Roman numberals | ||
| Base 2 | 100011001111000012 | 100011001111001102 |
| Base 3 | 101222221223 | 101222222113 |
| Base 4 | 1012132014 | 1012132124 |
| Base 5 | 43021215 | 43021315 |
| Base 6 | 13140256 | 13140346 |
| Base 7 | 4202457 | 4202537 |
| Base 8 | 2147418 | 2147468 |
| Base 9 | 1188789 | 1188849 |
| Base 10 | 7216110 | 7216610 |
| Base 11 | 4a24111 | 4a24611 |
| Base 12 | 3591512 | 3591a12 |
| Base 13 | 26acb13 | 26b0313 |
| Base 14 | 1c42514 | 1c42a14 |
| Base 15 | 165ab15 | 165b115 |
| Base 16 | 119e116 | 119e616 |