What is the GCF of 15 and 198?
The GCF of 15 and 198 is 3.
Steps to find GCF
- Find the prime factorization of 15
15 = 3 × 5 - Find the prime factorization of 198
198 = 2 × 3 × 3 × 11 - To find the GCF, multiply all the prime factors common to both numbers:
Therefore, GCF = 3
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Related
Find HCF of: 30 & 396 45 & 594 5 & 66 75 & 990 105 & 1386 30 & 198 15 & 396 45 & 198 15 & 594 75 & 198 15 & 990 105 & 198 15 & 1386
GCF Calculator
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The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).