Greatest Common Factor of 47, 17, 28, 644

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

• Greatest Common Factor of 47, 17, 28, 644 by common division method
• Greatest Common Factor of 47, 17, 28, 644 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 47

List of positive integer factors of 47 that divides 47 without a remainder.

1,47

Factors of 17

List of positive integer factors of 17 that divides 17 without a remainder.

1,17

Factors of 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

Factors of 644

List of positive integer factors of 644 that divides 644 without a remainder.

1,2,4,7,14,23,28,46,92,161,322,644

Greatest Common Factor

We found the factors 47,17,28,644 . The biggest common factor number is the GCF number.
So the greatest common factor 47,17,28,644 is 1.

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

• GCF of 38, 20, 86, 828
• GCF of 10, 21, 37, 932
• GCF of 30, 97, 92, 359
• GCF of 26, 44, 99, 653
• GCF of 77, 18, 75, 977

1. What is the GCF of 47, 17, 28, 644?

Answer: GCF of 47, 17, 28, 644 is 1.

2. How to Find the GCF of 47, 17, 28, 644

Answer: Greatest Common Factor(GCF) of 47, 17, 28, 644 = 1

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

Step 2: Then multiply all the prime factors GCF(47, 17, 28, 644) = 1.