Greatest Common Factor of 642, 787, 78

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

• Greatest Common Factor of 642, 787, 78 by common division method
• Greatest Common Factor of 642, 787, 78 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 642

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

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

Factors of 787

List of positive integer factors of 787 that divides 787 without a remainder.

1,787

Factors of 78

List of positive integer factors of 78 that divides 78 without a remainder.

1,2,3,6,13,26,39,78

Greatest Common Factor

We found the factors 642,787,78 . The biggest common factor number is the GCF number.
So the greatest common factor 642,787,78 is 1.

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

• GCF of 664, 176, 87
• GCF of 677, 970, 75
• GCF of 297, 938, 81
• GCF of 120, 640, 55
• GCF of 234, 677, 14

1. What is the GCF of 642, 787, 78?

Answer: GCF of 642, 787, 78 is 1.

2. How to Find the GCF of 642, 787, 78

Answer: Greatest Common Factor(GCF) of 642, 787, 78 = 1

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

Step 2: Then multiply all the prime factors GCF(642, 787, 78) = 1.