Greatest Common Factor of 690, 312, 42

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

• Greatest Common Factor of 690, 312, 42 by common division method
• Greatest Common Factor of 690, 312, 42 with matching the biggest common factor

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∴ So the GCF of the given numbers is 2 x 3 = 6

Factors of 690

List of positive integer factors of 690 that divides 690 without a remainder.

1,2,3,5,6,10,15,23,30,46,69,115,138,230,345,690

Factors of 312

List of positive integer factors of 312 that divides 312 without a remainder.

1,2,3,4,6,8,12,13,24,26,39,52,78,104,156,312

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 690,312,42 . The biggest common factor number is the GCF number.
So the greatest common factor 690,312,42 is 6.

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

• GCF of 224, 684, 64
• GCF of 995, 292, 15
• GCF of 228, 724, 45
• GCF of 657, 809, 82
• GCF of 655, 434, 81

1. What is the GCF of 690, 312, 42?

Answer: GCF of 690, 312, 42 is 6.

2. How to Find the GCF of 690, 312, 42

Answer: Greatest Common Factor(GCF) of 690, 312, 42 = 6

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

Step 2: Then multiply all the prime factors GCF(690, 312, 42) = 6.