Greatest Common Factor of 221, 133, 420

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

• Greatest Common Factor of 221, 133, 420 by common division method
• Greatest Common Factor of 221, 133, 420 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 221

List of positive integer factors of 221 that divides 221 without a remainder.

1,13,17,221

Factors of 133

List of positive integer factors of 133 that divides 133 without a remainder.

1,7,19,133

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

Greatest Common Factor

We found the factors 221,133,420 . The biggest common factor number is the GCF number.
So the greatest common factor 221,133,420 is 1.

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

• GCF of 773, 138, 427
• GCF of 328, 210, 674
• GCF of 267, 596, 583
• GCF of 850, 909, 753
• GCF of 836, 929, 979

1. What is the GCF of 221, 133, 420?

Answer: GCF of 221, 133, 420 is 1.

2. How to Find the GCF of 221, 133, 420

Answer: Greatest Common Factor(GCF) of 221, 133, 420 = 1

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

Step 2: Then multiply all the prime factors GCF(221, 133, 420) = 1.