Solutions by » GCF of two numbers

What is the GCF of 4 and 1715?

The GCF of 4 and 1715 is 1.

Steps to find GCF

  1. Find the prime factorization of 4
    4 = 2 × 2
  2. Find the prime factorization of 1715
    1715 = 5 × 7 × 7 × 7
  3. To find the GCF, multiply all the prime factors common to both numbers:

    Therefore, GCF = 1

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