Greatest Common Factor of 13, 21, 78, 476

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

• Greatest Common Factor of 13, 21, 78, 476 by common division method
• Greatest Common Factor of 13, 21, 78, 476 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 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 78

List of positive integer factors of 78 that divides 78 without a remainder.

1,2,3,6,13,26,39,78

Factors of 476

List of positive integer factors of 476 that divides 476 without a remainder.

1,2,4,7,14,17,28,34,68,119,238,476

Greatest Common Factor

We found the factors 13,21,78,476 . The biggest common factor number is the GCF number.
So the greatest common factor 13,21,78,476 is 1.

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

• GCF of 61, 21, 16, 792
• GCF of 18, 25, 50, 420
• GCF of 84, 82, 69, 961
• GCF of 79, 16, 10, 705
• GCF of 12, 27, 28, 152

1. What is the GCF of 13, 21, 78, 476?

Answer: GCF of 13, 21, 78, 476 is 1.

2. How to Find the GCF of 13, 21, 78, 476

Answer: Greatest Common Factor(GCF) of 13, 21, 78, 476 = 1

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

Step 2: Then multiply all the prime factors GCF(13, 21, 78, 476) = 1.