Compare 20918 vs 20921
Property | 20918 | 20921 |
---|---|---|
Type | semiprime | prime |
Unique factors | 2 | 1 |
Total factors | 2 | 1 |
Prime factorization | 21 × 104591 | 209211 |
Prime factorization | 2 × 10459 | 20921 |
Divisors count | 4 | 2 |
Divisors | 1, 2, 10459, 20918 | 1, 20921 |
Number of properties | 1 | 5 |
Harmonic primes | 864th | |
Isolated primes | 1642nd | |
Primes | 2353rd | |
Pythagorean primes | 1170th | |
Semiprimes | 5309th | |
Sophie germain primes | 339th | |
Roman numberals | ||
Base 2 | 1010001101101102 | 1010001101110012 |
Base 3 | 10012002023 | 10012002123 |
Base 4 | 110123124 | 110123214 |
Base 5 | 11321335 | 11321415 |
Base 6 | 2405026 | 2405056 |
Base 7 | 1146627 | 1146657 |
Base 8 | 506668 | 506718 |
Base 9 | 316229 | 316259 |
Base 10 | 2091810 | 2092110 |
Base 11 | 1479711 | 1479a11 |
Base 12 | 1013212 | 1013512 |
Base 13 | 96a113 | 96a413 |
Base 14 | 78a214 | 78a514 |
Base 15 | 62e815 | 62eb15 |
Base 16 | 51b616 | 51b916 |