Compare 21871 vs 21873
| Property | 21871 | 21873 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 218711 | 31 × 231 × 3171 |
| Prime factorization | 21871 | 3 × 23 × 317 |
| Divisors count | 2 | 8 |
| Divisors | 1, 21871 | 1, 3, 23, 69, 317, 951, 7291, 21873 |
| Number of properties | 3 | 0 |
| Additive primes | 1135th | |
| Isolated primes | 1711th | |
| Primes | 2454th | |
| Roman numberals | ||
| Base 2 | 1010101011011112 | 1010101011100012 |
| Base 3 | 10100000013 | 10100000103 |
| Base 4 | 111112334 | 111113014 |
| Base 5 | 11444415 | 11444435 |
| Base 6 | 2451316 | 2451336 |
| Base 7 | 1205237 | 1205257 |
| Base 8 | 525578 | 525618 |
| Base 9 | 330019 | 330039 |
| Base 10 | 2187110 | 2187310 |
| Base 11 | 1548311 | 1548511 |
| Base 12 | 107a712 | 107a912 |
| Base 13 | 9c5513 | 9c5713 |
| Base 14 | 7d8314 | 7d8514 |
| Base 15 | 673115 | 673315 |
| Base 16 | 556f16 | 557116 |