Greatest Common Factor of 61, 72, 66, 55

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

• Greatest Common Factor of 61, 72, 66, 55 by common division method
• Greatest Common Factor of 61, 72, 66, 55 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 61

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

1,61

Factors of 72

List of positive integer factors of 72 that divides 72 without a remainder.

1,2,3,4,6,8,9,12,18,24,36,72

Factors of 66

List of positive integer factors of 66 that divides 66 without a remainder.

1,2,3,6,11,22,33,66

Factors of 55

List of positive integer factors of 55 that divides 55 without a remainder.

1,5,11,55

Greatest Common Factor

We found the factors 61,72,66,55 . The biggest common factor number is the GCF number.
So the greatest common factor 61,72,66,55 is 1.

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

• GCF of 46, 67, 18, 25
• GCF of 52, 19, 88, 31
• GCF of 67, 27, 17, 62
• GCF of 51, 62, 91, 38
• GCF of 76, 62, 30, 62

1. What is the GCF of 61, 72, 66, 55?

Answer: GCF of 61, 72, 66, 55 is 1.

2. How to Find the GCF of 61, 72, 66, 55

Answer: Greatest Common Factor(GCF) of 61, 72, 66, 55 = 1

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

Step 2: Then multiply all the prime factors GCF(61, 72, 66, 55) = 1.