Compare 21205 vs 21211
| Property | 21205 | 21211 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 51 × 42411 | 212111 |
| Prime factorization | 5 × 4241 | 21211 |
| Divisors count | 4 | 2 |
| Divisors | 1, 5, 4241, 21205 | 1, 21211 |
| Number of properties | 1 | 5 |
| Additive primes | 1108th | |
| Isolated primes | 1664th | |
| Long primes | 906th | |
| Lucky primes | 388th | |
| Primes | 2385th | |
| Semiprimes | 5372nd | |
| Roman numberals | ||
| Base 2 | 1010010110101012 | 1010010110110112 |
| Base 3 | 10020021013 | 10020021213 |
| Base 4 | 110231114 | 110231234 |
| Base 5 | 11343105 | 11343215 |
| Base 6 | 2421016 | 2421116 |
| Base 7 | 1155527 | 1155617 |
| Base 8 | 513258 | 513338 |
| Base 9 | 320719 | 320779 |
| Base 10 | 2120510 | 2121110 |
| Base 11 | 14a2811 | 14a3311 |
| Base 12 | 1033112 | 1033712 |
| Base 13 | 986213 | 986813 |
| Base 14 | 7a2914 | 7a3114 |
| Base 15 | 643a15 | 644115 |
| Base 16 | 52d516 | 52db16 |