Compare 211209 vs 211217
| Property | 211209 | 211217 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 31 × 231 × 30611 | 2112171 |
| Prime factorization | 3 × 23 × 3061 | 211217 |
| Divisors count | 8 | 2 |
| Divisors | 1, 3, 23, 69, 3061, 9183, 70403, 211209 | 1, 211217 |
| Number of properties | 0 | 8 |
| Chen primes | 7895th | |
| Cousin primes (2nd member) | 2243rd | |
| Harmonic primes | 7082nd | |
| Long primes | 7070th | |
| Primes | 18910th | |
| Prime triplets (2nd member) | 880th | |
| Pythagorean primes | 9441st | |
| Twin primes (1st member) | 2264th | |
| Roman numberals | ||
| Base 2 | 1100111001000010012 | 1100111001000100012 |
| Base 3 | 1012012011203 | 1012012012123 |
| Base 4 | 3032100214 | 3032101014 |
| Base 5 | 232243145 | 232243325 |
| Base 6 | 43054536 | 43055056 |
| Base 7 | 15365257 | 15365367 |
| Base 8 | 6344118 | 6344218 |
| Base 9 | 3516469 | 3516559 |
| Base 10 | 21120910 | 21121710 |
| Base 11 | 13475911 | 13476611 |
| Base 12 | a228912 | a229512 |
| Base 13 | 7519b13 | 751a613 |
| Base 14 | 56d8514 | 56d8d14 |
| Base 15 | 428a915 | 428b215 |
| Base 16 | 3390916 | 3391116 |