Compare 68818 vs 68821
| Property | 68818 | 68821 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 21 × 191 × 18111 | 688211 |
| Prime factorization | 2 × 19 × 1811 | 68821 |
| Divisors count | 8 | 2 |
| Divisors | 1, 2, 19, 38, 1811, 3622, 34409, 68818 | 1, 68821 |
| Number of properties | 0 | 6 |
| Centered square primes | 57th | |
| Primes | 6841st | |
| Pythagorean primes | 3404th | |
| Super primes | 881st | |
| Twin primes (2nd member) | 891st | |
| Ulam primes | 503rd | |
| Roman numberals | ||
| Base 2 | 100001100110100102 | 100001100110101012 |
| Base 3 | 101111012113 | 101111012213 |
| Base 4 | 1003031024 | 1003031114 |
| Base 5 | 42002335 | 42002415 |
| Base 6 | 12503346 | 12503416 |
| Base 7 | 4044317 | 4044347 |
| Base 8 | 2063228 | 2063258 |
| Base 9 | 1143549 | 1143579 |
| Base 10 | 6881810 | 6882110 |
| Base 11 | 4778211 | 4778511 |
| Base 12 | 339aa12 | 339b112 |
| Base 13 | 2542913 | 2542c13 |
| Base 14 | 1b11814 | 1b11b14 |
| Base 15 | 155cd15 | 155d115 |
| Base 16 | 10cd216 | 10cd516 |