Greatest Common Factor of 78, 31, 21, 150

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

• Greatest Common Factor of 78, 31, 21, 150 by common division method
• Greatest Common Factor of 78, 31, 21, 150 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 78

List of positive integer factors of 78 that divides 78 without a remainder.

1,2,3,6,13,26,39,78

Factors of 31

List of positive integer factors of 31 that divides 31 without a remainder.

1,31

Factors of 21

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

1,3,7,21

Factors of 150

List of positive integer factors of 150 that divides 150 without a remainder.

1,2,3,5,6,10,15,25,30,50,75,150

Greatest Common Factor

We found the factors 78,31,21,150 . The biggest common factor number is the GCF number.
So the greatest common factor 78,31,21,150 is 1.

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

• GCF of 83, 40, 67, 248
• GCF of 11, 35, 10, 153
• GCF of 21, 56, 97, 353
• GCF of 41, 90, 22, 405
• GCF of 70, 39, 63, 675

1. What is the GCF of 78, 31, 21, 150?

Answer: GCF of 78, 31, 21, 150 is 1.

2. How to Find the GCF of 78, 31, 21, 150

Answer: Greatest Common Factor(GCF) of 78, 31, 21, 150 = 1

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

Step 2: Then multiply all the prime factors GCF(78, 31, 21, 150) = 1.