Compare 20521 vs 21149
| Property | 20521 | 21149 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 205211 | 211491 |
| Prime factorization | 20521 | 21149 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20521 | 1, 21149 |
| Number of properties | 6 | 11 |
| Additive primes | 1104th | |
| Chen primes | 1140th | 1168th |
| Happy primes | 394th | |
| Harmonic primes | 843rd | |
| Isolated primes | 1619th | 1658th |
| Long primes | 904th | |
| Primes | 2316th | 2377th |
| Pythagorean primes | 1153rd | 1180th |
| Sexy primes (2nd member) | 719th | |
| Sophie germain primes | 344th | |
| Super primes | 352nd | |
| Ulam primes | 172nd | 178th |
| Roman numberals | ||
| Base 2 | 1010000001010012 | 1010010100111012 |
| Base 3 | 10010110013 | 10020000223 |
| Base 4 | 110002214 | 110221314 |
| Base 5 | 11240415 | 11340445 |
| Base 6 | 2350016 | 2415256 |
| Base 7 | 1135547 | 1154427 |
| Base 8 | 500518 | 512358 |
| Base 9 | 311319 | 320089 |
| Base 10 | 2052110 | 2114910 |
| Base 11 | 1446611 | 1498711 |
| Base 12 | ba6112 | 102a512 |
| Base 13 | 945713 | 981b13 |
| Base 14 | 769b14 | 79c914 |
| Base 15 | 613115 | 63ee15 |
| Base 16 | 502916 | 529d16 |