Greatest Common Factor of 12, 21, 40, 177

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

• Greatest Common Factor of 12, 21, 40, 177 by common division method
• Greatest Common Factor of 12, 21, 40, 177 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 12

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

1,2,3,4,6,12

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 40

List of positive integer factors of 40 that divides 40 without a remainder.

1,2,4,5,8,10,20,40

Factors of 177

List of positive integer factors of 177 that divides 177 without a remainder.

1,3,59,177

Greatest Common Factor

We found the factors 12,21,40,177 . The biggest common factor number is the GCF number.
So the greatest common factor 12,21,40,177 is 1.

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

• GCF of 96, 38, 59, 656
• GCF of 36, 81, 65, 148
• GCF of 37, 19, 55, 658
• GCF of 92, 16, 79, 227
• GCF of 73, 47, 91, 596

1. What is the GCF of 12, 21, 40, 177?

Answer: GCF of 12, 21, 40, 177 is 1.

2. How to Find the GCF of 12, 21, 40, 177

Answer: Greatest Common Factor(GCF) of 12, 21, 40, 177 = 1

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

Step 2: Then multiply all the prime factors GCF(12, 21, 40, 177) = 1.