Greatest Common Factor of 90, 21, 197

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

• Greatest Common Factor of 90, 21, 197 by common division method
• Greatest Common Factor of 90, 21, 197 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 21

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

1,3,7,21

Factors of 197

List of positive integer factors of 197 that divides 197 without a remainder.

1,197

Greatest Common Factor

We found the factors 90,21,197 . The biggest common factor number is the GCF number.
So the greatest common factor 90,21,197 is 1.

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

• GCF of 16, 19, 735
• GCF of 60, 16, 507
• GCF of 91, 24, 775
• GCF of 84, 49, 829
• GCF of 66, 16, 728

1. What is the GCF of 90, 21, 197?

Answer: GCF of 90, 21, 197 is 1.

2. How to Find the GCF of 90, 21, 197

Answer: Greatest Common Factor(GCF) of 90, 21, 197 = 1

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

Step 2: Then multiply all the prime factors GCF(90, 21, 197) = 1.