Greatest Common Factor of 21, 340, 142

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

• Greatest Common Factor of 21, 340, 142 by common division method
• Greatest Common Factor of 21, 340, 142 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 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 340

List of positive integer factors of 340 that divides 340 without a remainder.

1,2,4,5,10,17,20,34,68,85,170,340

Factors of 142

List of positive integer factors of 142 that divides 142 without a remainder.

1,2,71,142

Greatest Common Factor

We found the factors 21,340,142 . The biggest common factor number is the GCF number.
So the greatest common factor 21,340,142 is 1.

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

• GCF of 31, 587, 304
• GCF of 49, 390, 941
• GCF of 83, 209, 658
• GCF of 36, 674, 227
• GCF of 43, 424, 180

1. What is the GCF of 21, 340, 142?

Answer: GCF of 21, 340, 142 is 1.

2. How to Find the GCF of 21, 340, 142

Answer: Greatest Common Factor(GCF) of 21, 340, 142 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 340, 142) = 1.