What is the GCF of 128 and 840?
The GCF of 128 and 840 is 8.
Steps to find GCF
- Find the prime factorization of 128
128 = 2 × 2 × 2 × 2 × 2 × 2 × 2 - Find the prime factorization of 840
840 = 2 × 2 × 2 × 3 × 5 × 7 - To find the GCF, multiply all the prime factors common to both numbers:
Therefore, GCF = 2 × 2 × 2 - GCF = 8
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Find HCF of: 256 & 1680 64 & 420 384 & 2520 640 & 4200 896 & 5880 256 & 840 128 & 1680 384 & 840 128 & 2520 640 & 840 128 & 4200 896 & 840 128 & 5880
GCF Calculator
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The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).