Greatest Common Factor of 78, 21, 152, 209

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

• Greatest Common Factor of 78, 21, 152, 209 by common division method
• Greatest Common Factor of 78, 21, 152, 209 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 21

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

1,3,7,21

Factors of 152

List of positive integer factors of 152 that divides 152 without a remainder.

1,2,4,8,19,38,76,152

Factors of 209

List of positive integer factors of 209 that divides 209 without a remainder.

1,11,19,209

Greatest Common Factor

We found the factors 78,21,152,209 . The biggest common factor number is the GCF number.
So the greatest common factor 78,21,152,209 is 1.

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

• GCF of 34, 34, 350, 566
• GCF of 83, 82, 674, 417
• GCF of 86, 69, 215, 766
• GCF of 53, 29, 878, 265
• GCF of 31, 47, 700, 376

1. What is the GCF of 78, 21, 152, 209?

Answer: GCF of 78, 21, 152, 209 is 1.

2. How to Find the GCF of 78, 21, 152, 209

Answer: Greatest Common Factor(GCF) of 78, 21, 152, 209 = 1

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

Step 2: Then multiply all the prime factors GCF(78, 21, 152, 209) = 1.