Compare 20505 vs 20509
| Property | 20505 | 20509 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 31 × 51 × 13671 | 205091 |
| Prime factorization | 3 × 5 × 1367 | 20509 |
| Divisors count | 8 | 2 |
| Divisors | 1, 3, 5, 15, 1367, 4101, 6835, 20505 | 1, 20509 |
| Number of properties | 0 | 5 |
| Long primes | 882nd | |
| Lucky primes | 375th | |
| Primes | 2315th | |
| Pythagorean primes | 1152nd | |
| Twin primes (2nd member) | 349th | |
| Roman numberals | ||
| Base 2 | 1010000000110012 | 1010000000111012 |
| Base 3 | 10010101103 | 10010101213 |
| Base 4 | 110001214 | 110001314 |
| Base 5 | 11240105 | 11240145 |
| Base 6 | 2345336 | 2345416 |
| Base 7 | 1135327 | 1135367 |
| Base 8 | 500318 | 500358 |
| Base 9 | 311139 | 311179 |
| Base 10 | 2050510 | 2050910 |
| Base 11 | 1445111 | 1445511 |
| Base 12 | ba4912 | ba5112 |
| Base 13 | 944413 | 944813 |
| Base 14 | 768914 | 768d14 |
| Base 15 | 612015 | 612415 |
| Base 16 | 501916 | 501d16 |