Greatest Common Factor of 251, 109, 20

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

• Greatest Common Factor of 251, 109, 20 by common division method
• Greatest Common Factor of 251, 109, 20 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 251

List of positive integer factors of 251 that divides 251 without a remainder.

1,251

Factors of 109

List of positive integer factors of 109 that divides 109 without a remainder.

1,109

Factors of 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Greatest Common Factor

We found the factors 251,109,20 . The biggest common factor number is the GCF number.
So the greatest common factor 251,109,20 is 1.

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

• GCF of 480, 697, 68
• GCF of 973, 815, 55
• GCF of 876, 236, 60
• GCF of 940, 372, 93
• GCF of 346, 952, 20

1. What is the GCF of 251, 109, 20?

Answer: GCF of 251, 109, 20 is 1.

2. How to Find the GCF of 251, 109, 20

Answer: Greatest Common Factor(GCF) of 251, 109, 20 = 1

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

Step 2: Then multiply all the prime factors GCF(251, 109, 20) = 1.