Greatest Common Factor of 21, 91, 87, 202

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

• Greatest Common Factor of 21, 91, 87, 202 by common division method
• Greatest Common Factor of 21, 91, 87, 202 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 91

List of positive integer factors of 91 that divides 91 without a remainder.

1,7,13,91

Factors of 87

List of positive integer factors of 87 that divides 87 without a remainder.

1,3,29,87

Factors of 202

List of positive integer factors of 202 that divides 202 without a remainder.

1,2,101,202

Greatest Common Factor

We found the factors 21,91,87,202 . The biggest common factor number is the GCF number.
So the greatest common factor 21,91,87,202 is 1.

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

• GCF of 66, 15, 43, 571
• GCF of 44, 85, 99, 491
• GCF of 94, 68, 70, 394
• GCF of 53, 10, 29, 327
• GCF of 30, 41, 58, 923

1. What is the GCF of 21, 91, 87, 202?

Answer: GCF of 21, 91, 87, 202 is 1.

2. How to Find the GCF of 21, 91, 87, 202

Answer: Greatest Common Factor(GCF) of 21, 91, 87, 202 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 91, 87, 202) = 1.