Greatest Common Factor of 65, 19, 64, 138

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

• Greatest Common Factor of 65, 19, 64, 138 by common division method
• Greatest Common Factor of 65, 19, 64, 138 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 65

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

1,5,13,65

Factors of 19

List of positive integer factors of 19 that divides 19 without a remainder.

1,19

Factors of 64

List of positive integer factors of 64 that divides 64 without a remainder.

1,2,4,8,16,32,64

Factors of 138

List of positive integer factors of 138 that divides 138 without a remainder.

1,2,3,6,23,46,69,138

Greatest Common Factor

We found the factors 65,19,64,138 . The biggest common factor number is the GCF number.
So the greatest common factor 65,19,64,138 is 1.

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

• GCF of 34, 91, 45, 700
• GCF of 38, 87, 92, 731
• GCF of 79, 25, 56, 157
• GCF of 47, 42, 45, 820
• GCF of 45, 73, 26, 285

1. What is the GCF of 65, 19, 64, 138?

Answer: GCF of 65, 19, 64, 138 is 1.

2. How to Find the GCF of 65, 19, 64, 138

Answer: Greatest Common Factor(GCF) of 65, 19, 64, 138 = 1

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

Step 2: Then multiply all the prime factors GCF(65, 19, 64, 138) = 1.