Greatest Common Factor of 687, 423, 642

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

• Greatest Common Factor of 687, 423, 642 by common division method
• Greatest Common Factor of 687, 423, 642 with matching the biggest common factor

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

Factors of 687

List of positive integer factors of 687 that divides 687 without a remainder.

1,3,229,687

Factors of 423

List of positive integer factors of 423 that divides 423 without a remainder.

1,3,9,47,141,423

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 687,423,642 . The biggest common factor number is the GCF number.
So the greatest common factor 687,423,642 is 3.

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

• GCF of 820, 649, 675
• GCF of 230, 250, 547
• GCF of 956, 664, 542
• GCF of 383, 658, 867
• GCF of 724, 131, 383

1. What is the GCF of 687, 423, 642?

Answer: GCF of 687, 423, 642 is 3.

2. How to Find the GCF of 687, 423, 642

Answer: Greatest Common Factor(GCF) of 687, 423, 642 = 3

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

Step 2: Then multiply all the prime factors GCF(687, 423, 642) = 3.