Greatest Common Factor of 15, 90, 71, 77

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

• Greatest Common Factor of 15, 90, 71, 77 by common division method
• Greatest Common Factor of 15, 90, 71, 77 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 15

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

1,3,5,15

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 71

List of positive integer factors of 71 that divides 71 without a remainder.

1,71

Factors of 77

List of positive integer factors of 77 that divides 77 without a remainder.

1,7,11,77

Greatest Common Factor

We found the factors 15,90,71,77 . The biggest common factor number is the GCF number.
So the greatest common factor 15,90,71,77 is 1.

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

• GCF of 16, 16, 31, 22
• GCF of 85, 92, 34, 81
• GCF of 61, 99, 44, 83
• GCF of 66, 71, 31, 66
• GCF of 10, 95, 65, 82

1. What is the GCF of 15, 90, 71, 77?

Answer: GCF of 15, 90, 71, 77 is 1.

2. How to Find the GCF of 15, 90, 71, 77

Answer: Greatest Common Factor(GCF) of 15, 90, 71, 77 = 1

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

Step 2: Then multiply all the prime factors GCF(15, 90, 71, 77) = 1.