Greatest Common Factor of 78, 65, 620

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

• Greatest Common Factor of 78, 65, 620 by common division method
• Greatest Common Factor of 78, 65, 620 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 78

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

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

Factors of 65

List of positive integer factors of 65 that divides 65 without a remainder.

1,5,13,65

Factors of 620

List of positive integer factors of 620 that divides 620 without a remainder.

1,2,4,5,10,20,31,62,124,155,310,620

Greatest Common Factor

We found the factors 78,65,620 . The biggest common factor number is the GCF number.
So the greatest common factor 78,65,620 is 1.

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

• GCF of 11, 91, 837
• GCF of 87, 97, 954
• GCF of 23, 53, 987
• GCF of 16, 57, 558
• GCF of 58, 95, 913

1. What is the GCF of 78, 65, 620?

Answer: GCF of 78, 65, 620 is 1.

2. How to Find the GCF of 78, 65, 620

Answer: Greatest Common Factor(GCF) of 78, 65, 620 = 1

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

Step 2: Then multiply all the prime factors GCF(78, 65, 620) = 1.