Greatest Common Factor of 25, 42, 60, 405

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

• Greatest Common Factor of 25, 42, 60, 405 by common division method
• Greatest Common Factor of 25, 42, 60, 405 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 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 60

List of positive integer factors of 60 that divides 60 without a remainder.

1,2,3,4,5,6,10,12,15,20,30,60

Factors of 405

List of positive integer factors of 405 that divides 405 without a remainder.

1,3,5,9,15,27,45,81,135,405

Greatest Common Factor

We found the factors 25,42,60,405 . The biggest common factor number is the GCF number.
So the greatest common factor 25,42,60,405 is 1.

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

• GCF of 41, 38, 72, 864
• GCF of 76, 90, 20, 936
• GCF of 49, 87, 18, 793
• GCF of 78, 29, 76, 360
• GCF of 60, 93, 79, 154

1. What is the GCF of 25, 42, 60, 405?

Answer: GCF of 25, 42, 60, 405 is 1.

2. How to Find the GCF of 25, 42, 60, 405

Answer: Greatest Common Factor(GCF) of 25, 42, 60, 405 = 1

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

Step 2: Then multiply all the prime factors GCF(25, 42, 60, 405) = 1.