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What is the GCF of 945 and 4479?

The GCF of 945 and 4479 is 3.

Steps to find GCF

  1. Find the prime factorization of 945
    945 = 3 × 3 × 3 × 5 × 7
  2. Find the prime factorization of 4479
    4479 = 3 × 1493
  3. To find the GCF, multiply all the prime factors common to both numbers:

    Therefore, GCF = 3

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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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