Greatest Common Factor of 12, 77, 40, 686

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

• Greatest Common Factor of 12, 77, 40, 686 by common division method
• Greatest Common Factor of 12, 77, 40, 686 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 12

List of positive integer factors of 12 that divides 12 without a remainder.

1,2,3,4,6,12

Factors of 77

List of positive integer factors of 77 that divides 77 without a remainder.

1,7,11,77

Factors of 40

List of positive integer factors of 40 that divides 40 without a remainder.

1,2,4,5,8,10,20,40

Factors of 686

List of positive integer factors of 686 that divides 686 without a remainder.

1,2,7,14,49,98,343,686

Greatest Common Factor

We found the factors 12,77,40,686 . The biggest common factor number is the GCF number.
So the greatest common factor 12,77,40,686 is 1.

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

• GCF of 46, 85, 12, 487
• GCF of 52, 31, 93, 346
• GCF of 42, 71, 69, 880
• GCF of 19, 41, 77, 103
• GCF of 16, 35, 88, 115

1. What is the GCF of 12, 77, 40, 686?

Answer: GCF of 12, 77, 40, 686 is 1.

2. How to Find the GCF of 12, 77, 40, 686

Answer: Greatest Common Factor(GCF) of 12, 77, 40, 686 = 1

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

Step 2: Then multiply all the prime factors GCF(12, 77, 40, 686) = 1.