Compare 21839 vs 21847
| Property | 21839 | 21847 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 218391 | 71 × 31211 |
| Prime factorization | 21839 | 7 × 3121 |
| Divisors count | 2 | 4 |
| Divisors | 1, 21839 | 1, 7, 3121, 21847 |
| Number of properties | 5 | 1 |
| Additive primes | 1133rd | |
| Chen primes | 1202nd | |
| Harmonic primes | 902nd | |
| Primes | 2449th | |
| Semiprimes | 5517th | |
| Twin primes (1st member) | 372nd | |
| Roman numberals | ||
| Base 2 | 1010101010011112 | 1010101010101112 |
| Base 3 | 10022212123 | 10022220113 |
| Base 4 | 111110334 | 111111134 |
| Base 5 | 11443245 | 11443425 |
| Base 6 | 2450356 | 2450516 |
| Base 7 | 1204467 | 1204607 |
| Base 8 | 525178 | 525278 |
| Base 9 | 328559 | 328649 |
| Base 10 | 2183910 | 2184710 |
| Base 11 | 1545411 | 1546111 |
| Base 12 | 1077b12 | 1078712 |
| Base 13 | 9c2c13 | 9c3713 |
| Base 14 | 7d5d14 | 7d6714 |
| Base 15 | 670e15 | 671715 |
| Base 16 | 554f16 | 555716 |