Solutions by » GCF of two numbers

What is the GCF of 1171 and 289?

The GCF of 1171 and 289 is 1.

Steps to find GCF

  1. Find the prime factorization of 1171
    1171 = 1171
  2. Find the prime factorization of 289
    289 = 17 × 17
  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).