Greatest Common Factor of 685, 255, 138

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

• Greatest Common Factor of 685, 255, 138 by common division method
• Greatest Common Factor of 685, 255, 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 685

List of positive integer factors of 685 that divides 685 without a remainder.

1,5,137,685

Factors of 255

List of positive integer factors of 255 that divides 255 without a remainder.

1,3,5,15,17,51,85,255

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 685,255,138 . The biggest common factor number is the GCF number.
So the greatest common factor 685,255,138 is 1.

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

• GCF of 301, 529, 255
• GCF of 825, 869, 643
• GCF of 753, 711, 154
• GCF of 500, 837, 365
• GCF of 685, 537, 741

1. What is the GCF of 685, 255, 138?

Answer: GCF of 685, 255, 138 is 1.

2. How to Find the GCF of 685, 255, 138

Answer: Greatest Common Factor(GCF) of 685, 255, 138 = 1

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

Step 2: Then multiply all the prime factors GCF(685, 255, 138) = 1.