Compare 20509 vs 20897
| Property | 20509 | 20897 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 205091 | 208971 |
| Prime factorization | 20509 | 20897 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20509 | 1, 20897 |
| Number of properties | 5 | 9 |
| Chen primes | 1156th | |
| Good primes | 264th | |
| Harmonic primes | 861st | |
| Long primes | 882nd | 893rd |
| Lucky primes | 375th | |
| Primes | 2315th | 2350th |
| Prime triplets (1st member) | 174th | |
| Pythagorean primes | 1152nd | 1169th |
| Sexy primes (1st member) | 713th | |
| Twin primes (1st member) | 356th | |
| Twin primes (2nd member) | 349th | |
| Roman numberals | ||
| Base 2 | 1010000000111012 | 1010001101000012 |
| Base 3 | 10010101213 | 10011222223 |
| Base 4 | 110001314 | 110122014 |
| Base 5 | 11240145 | 11320425 |
| Base 6 | 2345416 | 2404256 |
| Base 7 | 1135367 | 1146327 |
| Base 8 | 500358 | 506418 |
| Base 9 | 311179 | 315889 |
| Base 10 | 2050910 | 2089710 |
| Base 11 | 1445511 | 1477811 |
| Base 12 | ba5112 | 1011512 |
| Base 13 | 944813 | 968613 |
| Base 14 | 768d14 | 788914 |
| Base 15 | 612415 | 62d215 |
| Base 16 | 501d16 | 51a116 |