Greatest Common Factor of 13, 12, 61, 45

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

• Greatest Common Factor of 13, 12, 61, 45 by common division method
• Greatest Common Factor of 13, 12, 61, 45 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 13

List of positive integer factors of 13 that divides 13 without a remainder.

1,13

Factors of 12

List of positive integer factors of 12 that divides 12 without a remainder.

1,2,3,4,6,12

Factors of 61

List of positive integer factors of 61 that divides 61 without a remainder.

1,61

Factors of 45

List of positive integer factors of 45 that divides 45 without a remainder.

1,3,5,9,15,45

Greatest Common Factor

We found the factors 13,12,61,45 . The biggest common factor number is the GCF number.
So the greatest common factor 13,12,61,45 is 1.

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

• GCF of 88, 50, 50, 96
• GCF of 13, 78, 35, 79
• GCF of 91, 75, 18, 66
• GCF of 69, 37, 45, 76
• GCF of 33, 80, 61, 50

1. What is the GCF of 13, 12, 61, 45?

Answer: GCF of 13, 12, 61, 45 is 1.

2. How to Find the GCF of 13, 12, 61, 45

Answer: Greatest Common Factor(GCF) of 13, 12, 61, 45 = 1

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

Step 2: Then multiply all the prime factors GCF(13, 12, 61, 45) = 1.