Greatest Common Factor of 90, 97, 21, 75

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

• Greatest Common Factor of 90, 97, 21, 75 by common division method
• Greatest Common Factor of 90, 97, 21, 75 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 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 97

List of positive integer factors of 97 that divides 97 without a remainder.

1,97

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 75

List of positive integer factors of 75 that divides 75 without a remainder.

1,3,5,15,25,75

Greatest Common Factor

We found the factors 90,97,21,75 . The biggest common factor number is the GCF number.
So the greatest common factor 90,97,21,75 is 1.

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

• GCF of 47, 74, 56, 97
• GCF of 49, 67, 88, 63
• GCF of 96, 95, 38, 44
• GCF of 77, 73, 51, 41
• GCF of 14, 45, 56, 46

1. What is the GCF of 90, 97, 21, 75?

Answer: GCF of 90, 97, 21, 75 is 1.

2. How to Find the GCF of 90, 97, 21, 75

Answer: Greatest Common Factor(GCF) of 90, 97, 21, 75 = 1

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

Step 2: Then multiply all the prime factors GCF(90, 97, 21, 75) = 1.