Compare 20285 vs 20287
| Property | 20285 | 20287 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 51 × 40571 | 202871 |
| Prime factorization | 5 × 4057 | 20287 |
| Divisors count | 4 | 2 |
| Divisors | 1, 5, 4057, 20285 | 1, 20287 |
| Number of properties | 1 | 4 |
| Additive primes | 1065th | |
| Chen primes | 1126th | |
| Isolated primes | 1603rd | |
| Primes | 2292nd | |
| Semiprimes | 5151st | |
| Roman numberals | ||
| Base 2 | 1001111001111012 | 1001111001111112 |
| Base 3 | 10002110223 | 10002111013 |
| Base 4 | 103303314 | 103303334 |
| Base 5 | 11221205 | 11221225 |
| Base 6 | 2335256 | 2335316 |
| Base 7 | 1130667 | 1131017 |
| Base 8 | 474758 | 474778 |
| Base 9 | 307389 | 307419 |
| Base 10 | 2028510 | 2028710 |
| Base 11 | 1427111 | 1427311 |
| Base 12 | b8a512 | b8a712 |
| Base 13 | 930513 | 930713 |
| Base 14 | 756d14 | 757114 |
| Base 15 | 602515 | 602715 |
| Base 16 | 4f3d16 | 4f3f16 |