Greatest Common Factor of 681, 397, 21

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

• Greatest Common Factor of 681, 397, 21 by common division method
• Greatest Common Factor of 681, 397, 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 681

List of positive integer factors of 681 that divides 681 without a remainder.

1,3,227,681

Factors of 397

List of positive integer factors of 397 that divides 397 without a remainder.

1,397

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 681,397,21 . The biggest common factor number is the GCF number.
So the greatest common factor 681,397,21 is 1.

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

• GCF of 133, 144, 26
• GCF of 759, 503, 29
• GCF of 201, 289, 68
• GCF of 582, 824, 73
• GCF of 593, 952, 63

1. What is the GCF of 681, 397, 21?

Answer: GCF of 681, 397, 21 is 1.

2. How to Find the GCF of 681, 397, 21

Answer: Greatest Common Factor(GCF) of 681, 397, 21 = 1

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

Step 2: Then multiply all the prime factors GCF(681, 397, 21) = 1.