Greatest Common Factor of 397, 205, 445, 309, 390

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

• Greatest Common Factor of 397, 205, 445, 309, 390 by common division method
• Greatest Common Factor of 397, 205, 445, 309, 390 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 397

List of positive integer factors of 397 that divides 397 without a remainder.

1,397

Factors of 205

List of positive integer factors of 205 that divides 205 without a remainder.

1,5,41,205

Factors of 445

List of positive integer factors of 445 that divides 445 without a remainder.

1,5,89,445

Factors of 309

List of positive integer factors of 309 that divides 309 without a remainder.

1,3,103,309

Factors of 390

List of positive integer factors of 390 that divides 390 without a remainder.

1,2,3,5,6,10,13,15,26,30,39,65,78,130,195,390

Greatest Common Factor

We found the factors 397,205,445,309,390 . The biggest common factor number is the GCF number.
So the greatest common factor 397,205,445,309,390 is 1.

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

• GCF of 281, 773, 853, 951, 630
• GCF of 665, 176, 832, 615, 643
• GCF of 690, 720, 158, 499, 954
• GCF of 749, 777, 164, 796, 429
• GCF of 330, 603, 938, 986, 227

1. What is the GCF of 397, 205, 445, 309, 390?

Answer: GCF of 397, 205, 445, 309, 390 is 1.

2. How to Find the GCF of 397, 205, 445, 309, 390

Answer: Greatest Common Factor(GCF) of 397, 205, 445, 309, 390 = 1

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

Step 2: Then multiply all the prime factors GCF(397, 205, 445, 309, 390) = 1.