Greatest Common Factor of 85, 90, 645

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

• Greatest Common Factor of 85, 90, 645 by common division method
• Greatest Common Factor of 85, 90, 645 with matching the biggest common factor

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∴ So the GCF of the given numbers is 5 = 5

Factors of 85

List of positive integer factors of 85 that divides 85 without a remainder.

1,5,17,85

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 645

List of positive integer factors of 645 that divides 645 without a remainder.

1,3,5,15,43,129,215,645

Greatest Common Factor

We found the factors 85,90,645 . The biggest common factor number is the GCF number.
So the greatest common factor 85,90,645 is 5.

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

• GCF of 52, 13, 242
• GCF of 16, 41, 393
• GCF of 65, 13, 956
• GCF of 90, 48, 976
• GCF of 15, 39, 363

1. What is the GCF of 85, 90, 645?

Answer: GCF of 85, 90, 645 is 5.

2. How to Find the GCF of 85, 90, 645

Answer: Greatest Common Factor(GCF) of 85, 90, 645 = 5

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

Step 2: Then multiply all the prime factors GCF(85, 90, 645) = 5.