Greatest Common Factor of 42, 91, 646

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

• Greatest Common Factor of 42, 91, 646 by common division method
• Greatest Common Factor of 42, 91, 646 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 91

List of positive integer factors of 91 that divides 91 without a remainder.

1,7,13,91

Factors of 646

List of positive integer factors of 646 that divides 646 without a remainder.

1,2,17,19,34,38,323,646

Greatest Common Factor

We found the factors 42,91,646 . The biggest common factor number is the GCF number.
So the greatest common factor 42,91,646 is 1.

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

• GCF of 51, 63, 679
• GCF of 87, 69, 572
• GCF of 58, 84, 521
• GCF of 94, 77, 527
• GCF of 72, 20, 876

1. What is the GCF of 42, 91, 646?

Answer: GCF of 42, 91, 646 is 1.

2. How to Find the GCF of 42, 91, 646

Answer: Greatest Common Factor(GCF) of 42, 91, 646 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 91, 646) = 1.