Compare 20999 vs 21001
| Property | 20999 | 21001 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 111 × 231 × 831 | 210011 |
| Prime factorization | 11 × 23 × 83 | 21001 |
| Divisors count | 8 | 2 |
| Divisors | 1, 11, 23, 83, 253, 913, 1909, 20999 | 1, 21001 |
| Number of properties | 0 | 5 |
| Chen primes | 1162nd | |
| Harmonic primes | 867th | |
| Isolated primes | 1648th | |
| Primes | 2361st | |
| Pythagorean primes | 1173rd | |
| Roman numberals | ||
| Base 2 | 1010010000001112 | 1010010000010012 |
| Base 3 | 10012102023 | 10012102113 |
| Base 4 | 110200134 | 110200214 |
| Base 5 | 11324445 | 11330015 |
| Base 6 | 2411156 | 2411216 |
| Base 7 | 1151367 | 1151417 |
| Base 8 | 510078 | 510118 |
| Base 9 | 317229 | 317249 |
| Base 10 | 2099910 | 2100110 |
| Base 11 | 1486011 | 1486211 |
| Base 12 | 1019b12 | 101a112 |
| Base 13 | 973413 | 973613 |
| Base 14 | 791d14 | 792114 |
| Base 15 | 634e15 | 635115 |
| Base 16 | 520716 | 520916 |