What is the GCF of 378 and 245?
The GCF of 378 and 245 is 7.
Steps to find GCF
- Find the prime factorization of 378
378 = 2 × 3 × 3 × 3 × 7 - Find the prime factorization of 245
245 = 5 × 7 × 7 - To find the GCF, multiply all the prime factors common to both numbers:
Therefore, GCF = 7
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The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).