Greatest Common Factor of 47, 79, 90, 15, 51

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

• Greatest Common Factor of 47, 79, 90, 15, 51 by common division method
• Greatest Common Factor of 47, 79, 90, 15, 51 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 79

List of positive integer factors of 79 that divides 79 without a remainder.

1,79

Factors of 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Factors of 15

List of positive integer factors of 15 that divides 15 without a remainder.

1,3,5,15

Factors of 51

List of positive integer factors of 51 that divides 51 without a remainder.

1,3,17,51

Greatest Common Factor

We found the factors 47,79,90,15,51 . The biggest common factor number is the GCF number.
So the greatest common factor 47,79,90,15,51 is 1.

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

• GCF of 97, 29, 89, 36, 74
• GCF of 48, 30, 30, 56, 59
• GCF of 38, 43, 91, 32, 52
• GCF of 74, 82, 65, 11, 45
• GCF of 39, 71, 32, 51, 88

1. What is the GCF of 47, 79, 90, 15, 51?

Answer: GCF of 47, 79, 90, 15, 51 is 1.

2. How to Find the GCF of 47, 79, 90, 15, 51

Answer: Greatest Common Factor(GCF) of 47, 79, 90, 15, 51 = 1

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

Step 2: Then multiply all the prime factors GCF(47, 79, 90, 15, 51) = 1.