Greatest Common Factor of 690, 977, 21

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

• Greatest Common Factor of 690, 977, 21 by common division method
• Greatest Common Factor of 690, 977, 21 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 690

List of positive integer factors of 690 that divides 690 without a remainder.

1,2,3,5,6,10,15,23,30,46,69,115,138,230,345,690

Factors of 977

List of positive integer factors of 977 that divides 977 without a remainder.

1,977

Factors of 21

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

1,3,7,21

Greatest Common Factor

We found the factors 690,977,21 . The biggest common factor number is the GCF number.
So the greatest common factor 690,977,21 is 1.

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

• GCF of 266, 626, 41
• GCF of 225, 121, 37
• GCF of 793, 110, 12
• GCF of 182, 833, 95
• GCF of 950, 872, 53

1. What is the GCF of 690, 977, 21?

Answer: GCF of 690, 977, 21 is 1.

2. How to Find the GCF of 690, 977, 21

Answer: Greatest Common Factor(GCF) of 690, 977, 21 = 1

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

Step 2: Then multiply all the prime factors GCF(690, 977, 21) = 1.