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What is the GCF of 2835 and 8640?

The GCF of 2835 and 8640 is 135.

Steps to find GCF

  1. Find the prime factorization of 2835
    2835 = 3 × 3 × 3 × 3 × 5 × 7
  2. Find the prime factorization of 8640
    8640 = 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 5
  3. To find the GCF, multiply all the prime factors common to both numbers:

    Therefore, GCF = 3 × 3 × 3 × 5
  4. GCF = 135

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The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).

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