Greatest Common Factor of 57, 12, 642

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

• Greatest Common Factor of 57, 12, 642 by common division method
• Greatest Common Factor of 57, 12, 642 with matching the biggest common factor

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

Factors of 57

List of positive integer factors of 57 that divides 57 without a remainder.

1,3,19,57

Factors of 12

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

1,2,3,4,6,12

Factors of 642

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

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

Greatest Common Factor

We found the factors 57,12,642 . The biggest common factor number is the GCF number.
So the greatest common factor 57,12,642 is 3.

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

• GCF of 20, 34, 534
• GCF of 49, 38, 294
• GCF of 80, 49, 717
• GCF of 13, 17, 519
• GCF of 19, 19, 156

1. What is the GCF of 57, 12, 642?

Answer: GCF of 57, 12, 642 is 3.

2. How to Find the GCF of 57, 12, 642

Answer: Greatest Common Factor(GCF) of 57, 12, 642 = 3

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

Step 2: Then multiply all the prime factors GCF(57, 12, 642) = 3.