Compare 28778 vs 28789
| Property | 28778 | 28789 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 21 × 143891 | 287891 |
| Prime factorization | 2 × 14389 | 28789 |
| Divisors count | 4 | 2 |
| Divisors | 1, 2, 14389, 28778 | 1, 28789 |
| Number of properties | 1 | 6 |
| Cousin primes (1st member) | 456th | |
| Happy primes | 507th | |
| Harmonic primes | 1172nd | |
| Isolated primes | 2220th | |
| Primes | 3135th | |
| Pythagorean primes | 1558th | |
| Semiprimes | 7157th | |
| Roman numberals | ||
| Base 2 | 1110000011010102 | 1110000011101012 |
| Base 3 | 11101102123 | 11101110213 |
| Base 4 | 130012224 | 130013114 |
| Base 5 | 14101035 | 14101245 |
| Base 6 | 3411226 | 3411416 |
| Base 7 | 1466217 | 1466357 |
| Base 8 | 701528 | 701658 |
| Base 9 | 434259 | 434379 |
| Base 10 | 2877810 | 2878910 |
| Base 11 | 1a69211 | 1a6a211 |
| Base 12 | 147a212 | 147b112 |
| Base 13 | 1013913 | 1014713 |
| Base 14 | a6b814 | a6c514 |
| Base 15 | 87d815 | 87e415 |
| Base 16 | 706a16 | 707516 |