Greatest Common Factor of 921, 90, 42

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

• Greatest Common Factor of 921, 90, 42 by common division method
• Greatest Common Factor of 921, 90, 42 with matching the biggest common factor

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∴ So the GCF of the given numbers is 3 = 3

Factors of 921

List of positive integer factors of 921 that divides 921 without a remainder.

1,3,307,921

Factors of 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Factors of 42

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

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

Greatest Common Factor

We found the factors 921,90,42 . The biggest common factor number is the GCF number.
So the greatest common factor 921,90,42 is 3.

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

• GCF of 198, 52, 79
• GCF of 879, 22, 17
• GCF of 567, 61, 26
• GCF of 706, 47, 17
• GCF of 135, 40, 24

1. What is the GCF of 921, 90, 42?

Answer: GCF of 921, 90, 42 is 3.

2. How to Find the GCF of 921, 90, 42

Answer: Greatest Common Factor(GCF) of 921, 90, 42 = 3

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

Step 2: Then multiply all the prime factors GCF(921, 90, 42) = 3.