Solutions by » GCF of two numbers

What is the GCF of 2943 and 2206?

The GCF of 2943 and 2206 is 1.

Steps to find GCF

  1. Find the prime factorization of 2943
    2943 = 3 × 3 × 3 × 109
  2. Find the prime factorization of 2206
    2206 = 2 × 1103
  3. To find the GCF, multiply all the prime factors common to both numbers:

    Note that there are no common prime factors.
  4. Therefore, GCF = 1 (since 1 is a factor of every number)

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