Compare 28771 vs 28781
| Property | 28771 | 28781 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 287711 | 171 × 16931 |
| Prime factorization | 28771 | 17 × 1693 |
| Divisors count | 2 | 4 |
| Divisors | 1, 28771 | 1, 17, 1693, 28781 |
| Number of properties | 5 | 1 |
| Happy primes | 506th | |
| Harmonic primes | 1171st | |
| Isolated primes | 2219th | |
| Lucky primes | 485th | |
| Primes | 3134th | |
| Semiprimes | 7158th | |
| Roman numberals | ||
| Base 2 | 1110000011000112 | 1110000011011012 |
| Base 3 | 11101101213 | 11101102223 |
| Base 4 | 130012034 | 130012314 |
| Base 5 | 14100415 | 14101115 |
| Base 6 | 3411116 | 3411256 |
| Base 7 | 1466117 | 1466247 |
| Base 8 | 701438 | 701558 |
| Base 9 | 434179 | 434289 |
| Base 10 | 2877110 | 2878110 |
| Base 11 | 1a68611 | 1a69511 |
| Base 12 | 1479712 | 147a512 |
| Base 13 | 1013213 | 1013c13 |
| Base 14 | a6b114 | a6bb14 |
| Base 15 | 87d115 | 87db15 |
| Base 16 | 706316 | 706d16 |