Solutions by » GCF of two numbers

What is the GCF of 98 and 102?

The gcf of 98 and 102 is 2.

Steps to find GCF

  1. Find the prime factorization of 98
    98 = 2 × 7 × 7
  2. Find the prime factorization of 102
    102 = 2 × 3 × 17
  3. To find the gcf, multiply all the prime factors common to both numbers:

    Therefore, GCF = 2

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The greatest common factor (gcf) is also known as greatest common divisor (gcd) or highest common factor (hcf).