Greatest Common Factor of 420, 145, 306

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

• Greatest Common Factor of 420, 145, 306 by common division method
• Greatest Common Factor of 420, 145, 306 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 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 145

List of positive integer factors of 145 that divides 145 without a remainder.

1,5,29,145

Factors of 306

List of positive integer factors of 306 that divides 306 without a remainder.

1,2,3,6,9,17,18,34,51,102,153,306

Greatest Common Factor

We found the factors 420,145,306 . The biggest common factor number is the GCF number.
So the greatest common factor 420,145,306 is 1.

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

• GCF of 721, 931, 384
• GCF of 389, 325, 119
• GCF of 752, 598, 521
• GCF of 809, 153, 664
• GCF of 915, 124, 633

1. What is the GCF of 420, 145, 306?

Answer: GCF of 420, 145, 306 is 1.

2. How to Find the GCF of 420, 145, 306

Answer: Greatest Common Factor(GCF) of 420, 145, 306 = 1

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

Step 2: Then multiply all the prime factors GCF(420, 145, 306) = 1.