Greatest Common Factor of 21, 12, 74

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

• Greatest Common Factor of 21, 12, 74 by common division method
• Greatest Common Factor of 21, 12, 74 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 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 12

List of positive integer factors of 12 that divides 12 without a remainder.

1,2,3,4,6,12

Factors of 74

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

1,2,37,74

Greatest Common Factor

We found the factors 21,12,74 . The biggest common factor number is the GCF number.
So the greatest common factor 21,12,74 is 1.

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

• GCF of 74, 87, 45
• GCF of 57, 67, 56
• GCF of 26, 59, 55
• GCF of 16, 16, 21
• GCF of 42, 23, 95

1. What is the GCF of 21, 12, 74?

Answer: GCF of 21, 12, 74 is 1.

2. How to Find the GCF of 21, 12, 74

Answer: Greatest Common Factor(GCF) of 21, 12, 74 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 12, 74) = 1.