What is the GCF of 1215 and 784?
The GCF of 1215 and 784 is 1.
Steps to find GCF
- Find the prime factorization of 1215
1215 = 3 × 3 × 3 × 3 × 3 × 5 - Find the prime factorization of 784
784 = 2 × 2 × 2 × 2 × 7 × 7 - To find the GCF, multiply all the prime factors common to both numbers:
Note that there are no common prime factors. - Therefore, GCF = 1 (since 1 is a factor of every number)
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Find HCF of: 2430 & 1568 3645 & 2352 6075 & 3920 8505 & 5488 2430 & 784 1215 & 1568 3645 & 784 1215 & 2352 6075 & 784 1215 & 3920 8505 & 784 1215 & 5488
GCF Calculator
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The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).