Greatest Common Factor of 645, 423, 13

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

• Greatest Common Factor of 645, 423, 13 by common division method
• Greatest Common Factor of 645, 423, 13 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 645

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

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

Factors of 423

List of positive integer factors of 423 that divides 423 without a remainder.

1,3,9,47,141,423

Factors of 13

List of positive integer factors of 13 that divides 13 without a remainder.

1,13

Greatest Common Factor

We found the factors 645,423,13 . The biggest common factor number is the GCF number.
So the greatest common factor 645,423,13 is 1.

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

• GCF of 156, 560, 61
• GCF of 188, 633, 16
• GCF of 332, 759, 10
• GCF of 719, 976, 23
• GCF of 413, 608, 60

1. What is the GCF of 645, 423, 13?

Answer: GCF of 645, 423, 13 is 1.

2. How to Find the GCF of 645, 423, 13

Answer: Greatest Common Factor(GCF) of 645, 423, 13 = 1

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

Step 2: Then multiply all the prime factors GCF(645, 423, 13) = 1.