Compare 19861 vs 20509
| Property | 19861 | 20509 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 198611 | 205091 |
| Prime factorization | 19861 | 20509 |
| Divisors count | 2 | 2 |
| Divisors | 1, 19861 | 1, 20509 |
| Number of properties | 5 | 5 |
| Isolated primes | 1570th | |
| Long primes | 882nd | |
| Lucky primes | 365th | 375th |
| Primes | 2247th | 2315th |
| Pythagorean primes | 1117th | 1152nd |
| Sexy primes (1st member) | 690th | |
| Twin primes (2nd member) | 349th | |
| Roman numberals | ||
| Base 2 | 1001101100101012 | 1010000000111012 |
| Base 3 | 10000201213 | 10010101213 |
| Base 4 | 103121114 | 110001314 |
| Base 5 | 11134215 | 11240145 |
| Base 6 | 2315416 | 2345416 |
| Base 7 | 1116227 | 1135367 |
| Base 8 | 466258 | 500358 |
| Base 9 | 302179 | 311179 |
| Base 10 | 1986110 | 2050910 |
| Base 11 | 13a1611 | 1445511 |
| Base 12 | b5b112 | ba5112 |
| Base 13 | 906a13 | 944813 |
| Base 14 | 734914 | 768d14 |
| Base 15 | 5d4115 | 612415 |
| Base 16 | 4d9516 | 501d16 |