Greatest Common Factor of 123, 517, 20

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

• Greatest Common Factor of 123, 517, 20 by common division method
• Greatest Common Factor of 123, 517, 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 123

List of positive integer factors of 123 that divides 123 without a remainder.

1,3,41,123

Factors of 517

List of positive integer factors of 517 that divides 517 without a remainder.

1,11,47,517

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 123,517,20 . The biggest common factor number is the GCF number.
So the greatest common factor 123,517,20 is 1.

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

• GCF of 972, 923, 17
• GCF of 814, 716, 64
• GCF of 422, 209, 94
• GCF of 673, 537, 29
• GCF of 857, 531, 77

1. What is the GCF of 123, 517, 20?

Answer: GCF of 123, 517, 20 is 1.

2. How to Find the GCF of 123, 517, 20

Answer: Greatest Common Factor(GCF) of 123, 517, 20 = 1

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

Step 2: Then multiply all the prime factors GCF(123, 517, 20) = 1.