Compare 21967 vs 21977
| Property | 21967 | 21977 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 111 × 19971 | 219771 |
| Prime factorization | 11 × 1997 | 21977 |
| Divisors count | 4 | 2 |
| Divisors | 1, 11, 1997, 21967 | 1, 21977 |
| Number of properties | 1 | 6 |
| Chen primes | 1207th | |
| Harmonic primes | 906th | |
| Isolated primes | 1719th | |
| Long primes | 931st | |
| Primes | 2462nd | |
| Pythagorean primes | 1222nd | |
| Semiprimes | 5546th | |
| Roman numberals | ||
| Base 2 | 1010101110011112 | 1010101110110012 |
| Base 3 | 10100101213 | 10100102223 |
| Base 4 | 111130334 | 111131214 |
| Base 5 | 12003325 | 12004025 |
| Base 6 | 2454116 | 2454256 |
| Base 7 | 1210217 | 1210347 |
| Base 8 | 527178 | 527318 |
| Base 9 | 331179 | 331289 |
| Base 10 | 2196710 | 2197710 |
| Base 11 | 1556011 | 1556a11 |
| Base 12 | 1086712 | 1087512 |
| Base 13 | 9cca13 | a00713 |
| Base 14 | 801114 | 801b14 |
| Base 15 | 679715 | 67a215 |
| Base 16 | 55cf16 | 55d916 |