Compare 28181 vs 28387
| Property | 28181 | 28387 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 281811 | 283871 |
| Prime factorization | 28181 | 28387 |
| Divisors count | 2 | 2 |
| Divisors | 1, 28181 | 1, 28387 |
| Number of properties | 5 | 6 |
| Chen primes | 1493rd | 1503rd |
| Good primes | 314th | |
| Happy primes | 497th | |
| Harmonic primes | 1147th | |
| Isolated primes | 2185th | |
| Primes | 3072nd | 3088th |
| Pythagorean primes | 1529th | |
| Sexy primes (1st member) | 908th | |
| Twin primes (1st member) | 449th | |
| Roman numberals | ||
| Base 2 | 1101110000101012 | 1101110111000112 |
| Base 3 | 11021222023 | 11022211013 |
| Base 4 | 123201114 | 123232034 |
| Base 5 | 14002115 | 14020225 |
| Base 6 | 3342456 | 3352316 |
| Base 7 | 1451067 | 1455227 |
| Base 8 | 670258 | 673438 |
| Base 9 | 425829 | 428419 |
| Base 10 | 2818110 | 2838710 |
| Base 11 | 1a19a11 | 1a36711 |
| Base 12 | 1438512 | 1451712 |
| Base 13 | ca9a13 | cbc813 |
| Base 14 | a3ad14 | a4b914 |
| Base 15 | 853b15 | 862715 |
| Base 16 | 6e1516 | 6ee316 |