Greatest Common Factor of 25, 17, 20, 51

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

• Greatest Common Factor of 25, 17, 20, 51 by common division method
• Greatest Common Factor of 25, 17, 20, 51 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 25

List of positive integer factors of 25 that divides 25 without a remainder.

1,5,25

Factors of 17

List of positive integer factors of 17 that divides 17 without a remainder.

1,17

Factors of 20

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

1,2,4,5,10,20

Factors of 51

List of positive integer factors of 51 that divides 51 without a remainder.

1,3,17,51

Greatest Common Factor

We found the factors 25,17,20,51 . The biggest common factor number is the GCF number.
So the greatest common factor 25,17,20,51 is 1.

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

• GCF of 39, 27, 40, 70
• GCF of 29, 20, 78, 73
• GCF of 68, 40, 70, 99
• GCF of 80, 59, 28, 73
• GCF of 73, 97, 97, 87

1. What is the GCF of 25, 17, 20, 51?

Answer: GCF of 25, 17, 20, 51 is 1.

2. How to Find the GCF of 25, 17, 20, 51

Answer: Greatest Common Factor(GCF) of 25, 17, 20, 51 = 1

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

Step 2: Then multiply all the prime factors GCF(25, 17, 20, 51) = 1.