Compare 216919 vs 216921
| Property | 216919 | 216921 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 2169191 | 31 × 723071 |
| Prime factorization | 216919 | 3 × 72307 |
| Divisors count | 2 | 4 |
| Divisors | 1, 216919 | 1, 3, 72307, 216921 |
| Number of properties | 4 | 1 |
| Chen primes | 8073rd | |
| Harmonic primes | 7257th | |
| Primes | 19359th | |
| Semiprimes | 48873rd | |
| Twin primes (2nd member) | 2300th | |
| Roman numberals | ||
| Base 2 | 1101001111010101112 | 1101001111010110012 |
| Base 3 | 1020001200013 | 1020001200103 |
| Base 4 | 3103311134 | 3103311214 |
| Base 5 | 234201345 | 234201415 |
| Base 6 | 43521316 | 43521336 |
| Base 7 | 15622637 | 15622657 |
| Base 8 | 6475278 | 6475318 |
| Base 9 | 3605019 | 3605039 |
| Base 10 | 21691910 | 21692110 |
| Base 11 | 138a7a11 | 138a8111 |
| Base 12 | a564712 | a564912 |
| Base 13 | 7797113 | 7797313 |
| Base 14 | 590a314 | 590a514 |
| Base 15 | 4441415 | 4441615 |
| Base 16 | 34f5716 | 34f5916 |