Greatest Common Factor of 42, 74, 91, 220

Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways

• Greatest Common Factor of 42, 74, 91, 220 by common division method
• Greatest Common Factor of 42, 74, 91, 220 with matching the biggest common factor

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∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 74

List of positive integer factors of 74 that divides 74 without a remainder.

1,2,37,74

Factors of 91

List of positive integer factors of 91 that divides 91 without a remainder.

1,7,13,91

Factors of 220

List of positive integer factors of 220 that divides 220 without a remainder.

1,2,4,5,10,11,20,22,44,55,110,220

Greatest Common Factor

We found the factors 42,74,91,220 . The biggest common factor number is the GCF number.
So the greatest common factor 42,74,91,220 is 1.

Here are some samples of GCF of two or more Numbers calculations.

• GCF of 76, 98, 52, 669
• GCF of 77, 80, 96, 930
• GCF of 68, 69, 83, 449
• GCF of 59, 52, 58, 151
• GCF of 80, 11, 50, 165

1. What is the GCF of 42, 74, 91, 220?

Answer: GCF of 42, 74, 91, 220 is 1.

2. How to Find the GCF of 42, 74, 91, 220

Answer: Greatest Common Factor(GCF) of 42, 74, 91, 220 = 1

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors GCF(42, 74, 91, 220) = 1.