Greatest Common Factor of 78, 17, 98, 138

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

• Greatest Common Factor of 78, 17, 98, 138 by common division method
• Greatest Common Factor of 78, 17, 98, 138 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 17

List of positive integer factors of 17 that divides 17 without a remainder.

1,17

Factors of 98

List of positive integer factors of 98 that divides 98 without a remainder.

1,2,7,14,49,98

Factors of 138

List of positive integer factors of 138 that divides 138 without a remainder.

1,2,3,6,23,46,69,138

Greatest Common Factor

We found the factors 78,17,98,138 . The biggest common factor number is the GCF number.
So the greatest common factor 78,17,98,138 is 1.

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

• GCF of 33, 83, 14, 761
• GCF of 66, 73, 15, 871
• GCF of 98, 12, 52, 409
• GCF of 85, 65, 16, 823
• GCF of 10, 45, 97, 685

1. What is the GCF of 78, 17, 98, 138?

Answer: GCF of 78, 17, 98, 138 is 1.

2. How to Find the GCF of 78, 17, 98, 138

Answer: Greatest Common Factor(GCF) of 78, 17, 98, 138 = 1

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

Step 2: Then multiply all the prime factors GCF(78, 17, 98, 138) = 1.