Greatest Common Factor of 642, 657, 309

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

• Greatest Common Factor of 642, 657, 309 by common division method
• Greatest Common Factor of 642, 657, 309 with matching the biggest common factor

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

Factors of 642

List of positive integer factors of 642 that divides 642 without a remainder.

1,2,3,6,107,214,321,642

Factors of 657

List of positive integer factors of 657 that divides 657 without a remainder.

1,3,9,73,219,657

Factors of 309

List of positive integer factors of 309 that divides 309 without a remainder.

1,3,103,309

Greatest Common Factor

We found the factors 642,657,309 . The biggest common factor number is the GCF number.
So the greatest common factor 642,657,309 is 3.

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

• GCF of 644, 205, 127
• GCF of 784, 269, 456
• GCF of 600, 735, 892
• GCF of 812, 943, 381
• GCF of 271, 968, 133

1. What is the GCF of 642, 657, 309?

Answer: GCF of 642, 657, 309 is 3.

2. How to Find the GCF of 642, 657, 309

Answer: Greatest Common Factor(GCF) of 642, 657, 309 = 3

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

Step 2: Then multiply all the prime factors GCF(642, 657, 309) = 3.