Find the greatest number of `5` digits exactly divisible by `35, 56 and 91`.

Explanation

To find the greatest five-digit number that is exactly divisible by 35, 56, and 91, we can follow these steps:

### Step 1: Find the LCM of 35, 56, and 91
To find the least common multiple (LCM), we first need to factor each number into its prime factors.

- **35**: The prime factorization is \( 5 \times 7 \).
- **56**: The prime factorization is \( 2^3 \times 7 \).
- **91**: The prime factorization is \( 7 \times 13 \).
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