What is the GCF of 1521 and 7680?
The GCF of 1521 and 7680 is 3.
Steps to find GCF
- Find the prime factorization of 1521
1521 = 3 × 3 × 13 × 13 - Find the prime factorization of 7680
7680 = 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 - To find the GCF, multiply all the prime factors common to both numbers:
Therefore, GCF = 3
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The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).