Compare 216551 vs 216557
| Property | 216551 | 216557 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 2165511 | 111 × 196871 |
| Prime factorization | 216551 | 11 × 19687 |
| Divisors count | 2 | 4 |
| Divisors | 1, 216551 | 1, 11, 19687, 216557 |
| Number of properties | 5 | 1 |
| Chen primes | 8056th | |
| Good primes | 1059th | |
| Primes | 19325th | |
| Semiprimes | 48798th | |
| Twin primes (1st member) | 2295th | |
| Ulam primes | 1384th | |
| Roman numberals | ||
| Base 2 | 1101001101111001112 | 1101001101111011012 |
| Base 3 | 1020000011023 | 1020000011223 |
| Base 4 | 3103132134 | 3103132314 |
| Base 5 | 234122015 | 234122125 |
| Base 6 | 43503156 | 43503256 |
| Base 7 | 15612267 | 15612357 |
| Base 8 | 6467478 | 6467558 |
| Base 9 | 3600429 | 3600489 |
| Base 10 | 21655110 | 21655710 |
| Base 11 | 13877511 | 13878011 |
| Base 12 | a539b12 | a53a512 |
| Base 13 | 7774a13 | 7775313 |
| Base 14 | 58cbd14 | 58cc514 |
| Base 15 | 4426b15 | 4427215 |
| Base 16 | 34de716 | 34ded16 |