Compare 215981 vs 215986
| Property | 215981 | 215986 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 2159811 | 21 × 791 × 13671 |
| Prime factorization | 215981 | 2 × 79 × 1367 |
| Divisors count | 2 | 8 |
| Divisors | 1, 215981 | 1, 2, 79, 158, 1367, 2734, 107993, 215986 |
| Number of properties | 6 | 0 |
| Chen primes | 8043rd | |
| Happy primes | 2928th | |
| Long primes | 7217th | |
| Primes | 19286th | |
| Pythagorean primes | 9622nd | |
| Twin primes (1st member) | 2292nd | |
| Roman numberals | ||
| Base 2 | 1101001011101011012 | 1101001011101100102 |
| Base 3 | 1012220210223 | 1012220211113 |
| Base 4 | 3102322314 | 3102323024 |
| Base 5 | 234024115 | 234024215 |
| Base 6 | 43435256 | 43435346 |
| Base 7 | 15564537 | 15564617 |
| Base 8 | 6456558 | 6456628 |
| Base 9 | 3582389 | 3582449 |
| Base 10 | 21598110 | 21598610 |
| Base 11 | 1382a711 | 13830111 |
| Base 12 | a4ba512 | a4baa12 |
| Base 13 | 773cc13 | 7740413 |
| Base 14 | 589d314 | 589d814 |
| Base 15 | 43edb15 | 43ee115 |
| Base 16 | 34bad16 | 34bb216 |