Greatest Common Factor of 42, 13, 21, 422

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

• Greatest Common Factor of 42, 13, 21, 422 by common division method
• Greatest Common Factor of 42, 13, 21, 422 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 13

List of positive integer factors of 13 that divides 13 without a remainder.

1,13

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 422

List of positive integer factors of 422 that divides 422 without a remainder.

1,2,211,422

Greatest Common Factor

We found the factors 42,13,21,422 . The biggest common factor number is the GCF number.
So the greatest common factor 42,13,21,422 is 1.

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

• GCF of 24, 49, 71, 796
• GCF of 22, 66, 68, 451
• GCF of 47, 49, 50, 631
• GCF of 13, 34, 59, 925
• GCF of 74, 36, 25, 150

1. What is the GCF of 42, 13, 21, 422?

Answer: GCF of 42, 13, 21, 422 is 1.

2. How to Find the GCF of 42, 13, 21, 422

Answer: Greatest Common Factor(GCF) of 42, 13, 21, 422 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 13, 21, 422) = 1.