Greatest Common Factor of 68, 86, 81, 90, 102

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

• Greatest Common Factor of 68, 86, 81, 90, 102 by common division method
• Greatest Common Factor of 68, 86, 81, 90, 102 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 68

List of positive integer factors of 68 that divides 68 without a remainder.

1,2,4,17,34,68

Factors of 86

List of positive integer factors of 86 that divides 86 without a remainder.

1,2,43,86

Factors of 81

List of positive integer factors of 81 that divides 81 without a remainder.

1,3,9,27,81

Factors of 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

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 68,86,81,90,102 . The biggest common factor number is the GCF number.
So the greatest common factor 68,86,81,90,102 is 1.

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

• GCF of 72, 77, 79, 71, 689
• GCF of 48, 62, 48, 85, 293
• GCF of 49, 75, 25, 30, 204
• GCF of 64, 60, 52, 89, 894
• GCF of 17, 26, 22, 71, 663

1. What is the GCF of 68, 86, 81, 90, 102?

Answer: GCF of 68, 86, 81, 90, 102 is 1.

2. How to Find the GCF of 68, 86, 81, 90, 102

Answer: Greatest Common Factor(GCF) of 68, 86, 81, 90, 102 = 1

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

Step 2: Then multiply all the prime factors GCF(68, 86, 81, 90, 102) = 1.