Greatest Common Factor of 408, 428, 217

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

• Greatest Common Factor of 408, 428, 217 by common division method
• Greatest Common Factor of 408, 428, 217 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 408

List of positive integer factors of 408 that divides 408 without a remainder.

1,2,3,4,6,8,12,17,24,34,51,68,102,136,204,408

Factors of 428

List of positive integer factors of 428 that divides 428 without a remainder.

1,2,4,107,214,428

Factors of 217

List of positive integer factors of 217 that divides 217 without a remainder.

1,7,31,217

Greatest Common Factor

We found the factors 408,428,217 . The biggest common factor number is the GCF number.
So the greatest common factor 408,428,217 is 1.

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

• GCF of 119, 123, 965
• GCF of 421, 629, 295
• GCF of 362, 109, 236
• GCF of 248, 756, 388
• GCF of 675, 919, 399

1. What is the GCF of 408, 428, 217?

Answer: GCF of 408, 428, 217 is 1.

2. How to Find the GCF of 408, 428, 217

Answer: Greatest Common Factor(GCF) of 408, 428, 217 = 1

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

Step 2: Then multiply all the prime factors GCF(408, 428, 217) = 1.