Greatest Common Factor of 21, 478, 169

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

• Greatest Common Factor of 21, 478, 169 by common division method
• Greatest Common Factor of 21, 478, 169 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 478

List of positive integer factors of 478 that divides 478 without a remainder.

1,2,239,478

Factors of 169

List of positive integer factors of 169 that divides 169 without a remainder.

1,13,169

Greatest Common Factor

We found the factors 21,478,169 . The biggest common factor number is the GCF number.
So the greatest common factor 21,478,169 is 1.

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

• GCF of 67, 400, 164
• GCF of 38, 670, 686
• GCF of 75, 149, 142
• GCF of 14, 779, 411
• GCF of 69, 610, 151

1. What is the GCF of 21, 478, 169?

Answer: GCF of 21, 478, 169 is 1.

2. How to Find the GCF of 21, 478, 169

Answer: Greatest Common Factor(GCF) of 21, 478, 169 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 478, 169) = 1.