Greatest Common Factor of 305, 420, 397

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

• Greatest Common Factor of 305, 420, 397 by common division method
• Greatest Common Factor of 305, 420, 397 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 305

List of positive integer factors of 305 that divides 305 without a remainder.

1,5,61,305

Factors of 420

List of positive integer factors of 420 that divides 420 without a remainder.

1,2,3,4,5,6,7,10,12,14,15,20,21,28,30,35,42,60,70,84,105,140,210,420

Factors of 397

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

1,397

Greatest Common Factor

We found the factors 305,420,397 . The biggest common factor number is the GCF number.
So the greatest common factor 305,420,397 is 1.

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

• GCF of 915, 805, 547
• GCF of 165, 576, 553
• GCF of 341, 839, 638
• GCF of 985, 355, 841
• GCF of 255, 776, 793

1. What is the GCF of 305, 420, 397?

Answer: GCF of 305, 420, 397 is 1.

2. How to Find the GCF of 305, 420, 397

Answer: Greatest Common Factor(GCF) of 305, 420, 397 = 1

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

Step 2: Then multiply all the prime factors GCF(305, 420, 397) = 1.