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What is the GCF of 140 and 1470?

The gcf of 140 and 1470 is 70.

Steps to find GCF

  1. Find the prime factorization of 140
    140 = 2 × 2 × 5 × 7
  2. Find the prime factorization of 1470
    1470 = 2 × 3 × 5 × 7 × 7
  3. To find the gcf, multiply all the prime factors common to both numbers:

    Therefore, GCF = 2 × 5 × 7
  4. GCF = 70

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

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