Compare 21887 vs 21893
| Property | 21887 | 21893 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 431 × 5091 | 218931 |
| Prime factorization | 43 × 509 | 21893 |
| Divisors count | 4 | 2 |
| Divisors | 1, 43, 509, 21887 | 1, 21893 |
| Number of properties | 1 | 5 |
| Additive primes | 1136th | |
| Isolated primes | 1713th | |
| Primes | 2456th | |
| Pythagorean primes | 1218th | |
| Semiprimes | 5526th | |
| Sophie germain primes | 354th | |
| Roman numberals | ||
| Base 2 | 1010101011111112 | 1010101100001012 |
| Base 3 | 10100001223 | 10100002123 |
| Base 4 | 111113334 | 111120114 |
| Base 5 | 12000225 | 12000335 |
| Base 6 | 2451556 | 2452056 |
| Base 7 | 1205457 | 1205547 |
| Base 8 | 525778 | 526058 |
| Base 9 | 330189 | 330259 |
| Base 10 | 2188710 | 2189310 |
| Base 11 | 1549811 | 154a311 |
| Base 12 | 107bb12 | 1080512 |
| Base 13 | 9c6813 | 9c7113 |
| Base 14 | 7d9514 | 7d9b14 |
| Base 15 | 674215 | 674815 |
| Base 16 | 557f16 | 558516 |