Greatest Common Factor of 687, 643, 438, 328, 172

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

• Greatest Common Factor of 687, 643, 438, 328, 172 by common division method
• Greatest Common Factor of 687, 643, 438, 328, 172 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 687

List of positive integer factors of 687 that divides 687 without a remainder.

1,3,229,687

Factors of 643

List of positive integer factors of 643 that divides 643 without a remainder.

1,643

Factors of 438

List of positive integer factors of 438 that divides 438 without a remainder.

1,2,3,6,73,146,219,438

Factors of 328

List of positive integer factors of 328 that divides 328 without a remainder.

1,2,4,8,41,82,164,328

Factors of 172

List of positive integer factors of 172 that divides 172 without a remainder.

1,2,4,43,86,172

Greatest Common Factor

We found the factors 687,643,438,328,172 . The biggest common factor number is the GCF number.
So the greatest common factor 687,643,438,328,172 is 1.

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

• GCF of 470, 622, 298, 623, 839
• GCF of 435, 681, 490, 156, 726
• GCF of 382, 347, 894, 417, 263
• GCF of 180, 702, 631, 589, 361
• GCF of 242, 711, 510, 279, 293

1. What is the GCF of 687, 643, 438, 328, 172?

Answer: GCF of 687, 643, 438, 328, 172 is 1.

2. How to Find the GCF of 687, 643, 438, 328, 172

Answer: Greatest Common Factor(GCF) of 687, 643, 438, 328, 172 = 1

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

Step 2: Then multiply all the prime factors GCF(687, 643, 438, 328, 172) = 1.