Greatest Common Factor of 15, 36, 78, 102

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

• Greatest Common Factor of 15, 36, 78, 102 by common division method
• Greatest Common Factor of 15, 36, 78, 102 with matching the biggest common factor

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∴ So the GCF of the given numbers is 3 = 3

Factors of 15

List of positive integer factors of 15 that divides 15 without a remainder.

1,3,5,15

Factors of 36

List of positive integer factors of 36 that divides 36 without a remainder.

1,2,3,4,6,9,12,18,36

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 102

List of positive integer factors of 102 that divides 102 without a remainder.

1,2,3,6,17,34,51,102

Greatest Common Factor

We found the factors 15,36,78,102 . The biggest common factor number is the GCF number.
So the greatest common factor 15,36,78,102 is 3.

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

• GCF of 12, 57, 57, 953
• GCF of 70, 74, 70, 329
• GCF of 67, 43, 84, 928
• GCF of 84, 72, 74, 463
• GCF of 80, 83, 31, 659

1. What is the GCF of 15, 36, 78, 102?

Answer: GCF of 15, 36, 78, 102 is 3.

2. How to Find the GCF of 15, 36, 78, 102

Answer: Greatest Common Factor(GCF) of 15, 36, 78, 102 = 3

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

Step 2: Then multiply all the prime factors GCF(15, 36, 78, 102) = 3.