What is the GCF of 128 and 420?
The GCF of 128 and 420 is 4.
Steps to find GCF
- Find the prime factorization of 128
128 = 2 × 2 × 2 × 2 × 2 × 2 × 2 - Find the prime factorization of 420
420 = 2 × 2 × 3 × 5 × 7 - To find the GCF, multiply all the prime factors common to both numbers:
Therefore, GCF = 2 × 2 - GCF = 4
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Related
Find HCF of: 256 & 840 64 & 210 384 & 1260 640 & 2100 896 & 2940 256 & 420 128 & 840 384 & 420 128 & 1260 640 & 420 128 & 2100 896 & 420 128 & 2940
GCF Calculator
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The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).