What is the GCF of 810 and 1890?
The GCF of 810 and 1890 is 270.
Steps to find GCF
- Find the prime factorization of 810
810 = 2 × 3 × 3 × 3 × 3 × 5 - Find the prime factorization of 1890
1890 = 2 × 3 × 3 × 3 × 5 × 7 - To find the GCF, multiply all the prime factors common to both numbers:
Therefore, GCF = 2 × 3 × 3 × 3 × 5 - GCF = 270
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Find HCF of: 1620 & 3780 405 & 945 2430 & 5670 270 & 630 4050 & 9450 162 & 378 1620 & 1890 810 & 3780 2430 & 1890 810 & 5670 4050 & 1890 810 & 9450 5670 & 1890
GCF Calculator
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The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).