Compare 20509 vs 21139
| Property | 20509 | 21139 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 205091 | 211391 |
| Prime factorization | 20509 | 21139 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20509 | 1, 21139 |
| Number of properties | 5 | 5 |
| Cousin primes (1st member) | 360th | |
| Good primes | 266th | |
| Isolated primes | 1656th | |
| Long primes | 882nd | |
| Lucky primes | 375th | 385th |
| Primes | 2315th | 2375th |
| Pythagorean primes | 1152nd | |
| Twin primes (2nd member) | 349th | |
| Roman numberals | ||
| Base 2 | 1010000000111012 | 1010010100100112 |
| Base 3 | 10010101213 | 10012222213 |
| Base 4 | 110001314 | 110221034 |
| Base 5 | 11240145 | 11340245 |
| Base 6 | 2345416 | 2415116 |
| Base 7 | 1135367 | 1154267 |
| Base 8 | 500358 | 512238 |
| Base 9 | 311179 | 318879 |
| Base 10 | 2050910 | 2113910 |
| Base 11 | 1445511 | 1497811 |
| Base 12 | ba5112 | 1029712 |
| Base 13 | 944813 | 981113 |
| Base 14 | 768d14 | 79bd14 |
| Base 15 | 612415 | 63e415 |
| Base 16 | 501d16 | 529316 |