# Write the greatest 4-digit number and express it in terms of its prime factors

**Solution:**

We will be using the concepts of prime numbers, factors to solve this.

The greatest 4-digit number is 9999.

9999 = 3 × 3 × 11 × 101 [Prime factors are the factors of the given number which are prime.]

Thus, the prime factors of the greatest 4-digit number 9999 are 3, 3, 11, 101.

NCERT Solutions for Class 6 Maths Chapter 3 Exercise 3.5 Question 4

## Write the greatest 4-digit number and express it in terms of its prime factors

**Summary:**

The greatest 4-digit number is 9999. The prime factors of 9999 are 3, 3, 11, 101.

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