What is the GCF of 15 and 70?
The GCF of 15 and 70 is 5.
Steps to find GCF
- Find the prime factorization of 15
15 = 3 × 5 - Find the prime factorization of 70
70 = 2 × 5 × 7 - To find the GCF, multiply all the prime factors common to both numbers:
Therefore, GCF = 5
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Related
Find HCF of: 30 & 140 45 & 210 75 & 350 3 & 14 105 & 490 30 & 70 15 & 140 45 & 70 15 & 210 75 & 70 15 & 350 105 & 70 15 & 490
GCF Calculator
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The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).