Greatest Common Factor of 42, 23, 21, 522

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

• Greatest Common Factor of 42, 23, 21, 522 by common division method
• Greatest Common Factor of 42, 23, 21, 522 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 23

List of positive integer factors of 23 that divides 23 without a remainder.

1,23

Factors of 21

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

1,3,7,21

Factors of 522

List of positive integer factors of 522 that divides 522 without a remainder.

1,2,3,6,9,18,29,58,87,174,261,522

Greatest Common Factor

We found the factors 42,23,21,522 . The biggest common factor number is the GCF number.
So the greatest common factor 42,23,21,522 is 1.

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

• GCF of 76, 90, 85, 696
• GCF of 41, 10, 64, 668
• GCF of 43, 43, 70, 938
• GCF of 53, 90, 88, 230
• GCF of 55, 22, 71, 863

1. What is the GCF of 42, 23, 21, 522?

Answer: GCF of 42, 23, 21, 522 is 1.

2. How to Find the GCF of 42, 23, 21, 522

Answer: Greatest Common Factor(GCF) of 42, 23, 21, 522 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 23, 21, 522) = 1.