Greatest Common Factor of 21, 841, 155

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

• Greatest Common Factor of 21, 841, 155 by common division method
• Greatest Common Factor of 21, 841, 155 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 841

List of positive integer factors of 841 that divides 841 without a remainder.

1,29,841

Factors of 155

List of positive integer factors of 155 that divides 155 without a remainder.

1,5,31,155

Greatest Common Factor

We found the factors 21,841,155 . The biggest common factor number is the GCF number.
So the greatest common factor 21,841,155 is 1.

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

• GCF of 96, 941, 136
• GCF of 66, 902, 175
• GCF of 84, 269, 212
• GCF of 76, 896, 517
• GCF of 92, 429, 557

1. What is the GCF of 21, 841, 155?

Answer: GCF of 21, 841, 155 is 1.

2. How to Find the GCF of 21, 841, 155

Answer: Greatest Common Factor(GCF) of 21, 841, 155 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 841, 155) = 1.