Compare 21871 vs 21874
| Property | 21871 | 21874 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 218711 | 21 × 109371 |
| Prime factorization | 21871 | 2 × 10937 |
| Divisors count | 2 | 4 |
| Divisors | 1, 21871 | 1, 2, 10937, 21874 |
| Number of properties | 3 | 1 |
| Additive primes | 1135th | |
| Isolated primes | 1711th | |
| Primes | 2454th | |
| Semiprimes | 5522nd | |
| Roman numberals | ||
| Base 2 | 1010101011011112 | 1010101011100102 |
| Base 3 | 10100000013 | 10100000113 |
| Base 4 | 111112334 | 111113024 |
| Base 5 | 11444415 | 11444445 |
| Base 6 | 2451316 | 2451346 |
| Base 7 | 1205237 | 1205267 |
| Base 8 | 525578 | 525628 |
| Base 9 | 330019 | 330049 |
| Base 10 | 2187110 | 2187410 |
| Base 11 | 1548311 | 1548611 |
| Base 12 | 107a712 | 107aa12 |
| Base 13 | 9c5513 | 9c5813 |
| Base 14 | 7d8314 | 7d8614 |
| Base 15 | 673115 | 673415 |
| Base 16 | 556f16 | 557216 |