Greatest Common Factor of 42, 686, 661

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

• Greatest Common Factor of 42, 686, 661 by common division method
• Greatest Common Factor of 42, 686, 661 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 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 686

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

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

Factors of 661

List of positive integer factors of 661 that divides 661 without a remainder.

1,661

Greatest Common Factor

We found the factors 42,686,661 . The biggest common factor number is the GCF number.
So the greatest common factor 42,686,661 is 1.

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

• GCF of 70, 114, 843
• GCF of 82, 269, 498
• GCF of 22, 123, 879
• GCF of 47, 950, 832
• GCF of 83, 112, 810

1. What is the GCF of 42, 686, 661?

Answer: GCF of 42, 686, 661 is 1.

2. How to Find the GCF of 42, 686, 661

Answer: Greatest Common Factor(GCF) of 42, 686, 661 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 686, 661) = 1.