Greatest Common Factor of 21, 26, 68, 423

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

• Greatest Common Factor of 21, 26, 68, 423 by common division method
• Greatest Common Factor of 21, 26, 68, 423 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 21

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

1,3,7,21

Factors of 26

List of positive integer factors of 26 that divides 26 without a remainder.

1,2,13,26

Factors of 68

List of positive integer factors of 68 that divides 68 without a remainder.

1,2,4,17,34,68

Factors of 423

List of positive integer factors of 423 that divides 423 without a remainder.

1,3,9,47,141,423

Greatest Common Factor

We found the factors 21,26,68,423 . The biggest common factor number is the GCF number.
So the greatest common factor 21,26,68,423 is 1.

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

• GCF of 62, 49, 90, 771
• GCF of 97, 22, 47, 971
• GCF of 72, 10, 77, 105
• GCF of 66, 81, 76, 634
• GCF of 70, 17, 63, 489

1. What is the GCF of 21, 26, 68, 423?

Answer: GCF of 21, 26, 68, 423 is 1.

2. How to Find the GCF of 21, 26, 68, 423

Answer: Greatest Common Factor(GCF) of 21, 26, 68, 423 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 26, 68, 423) = 1.