Solutions by » GCF of two numbers

What is the GCF of 145 and 9802?

The GCF of 145 and 9802 is 29.

Steps to find GCF

  1. Find the prime factorization of 145
    145 = 5 × 29
  2. Find the prime factorization of 9802
    9802 = 2 × 13 × 13 × 29
  3. To find the GCF, multiply all the prime factors common to both numbers:

    Therefore, GCF = 29

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