Greatest Common Factor of 21, 53, 70, 155

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

• Greatest Common Factor of 21, 53, 70, 155 by common division method
• Greatest Common Factor of 21, 53, 70, 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 53

List of positive integer factors of 53 that divides 53 without a remainder.

1,53

Factors of 70

List of positive integer factors of 70 that divides 70 without a remainder.

1,2,5,7,10,14,35,70

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 21,53,70,155 . The biggest common factor number is the GCF number.
So the greatest common factor 21,53,70,155 is 1.

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

• GCF of 32, 53, 23, 700
• GCF of 46, 65, 93, 769
• GCF of 21, 44, 58, 474
• GCF of 10, 27, 86, 692
• GCF of 79, 10, 96, 557

1. What is the GCF of 21, 53, 70, 155?

Answer: GCF of 21, 53, 70, 155 is 1.

2. How to Find the GCF of 21, 53, 70, 155

Answer: Greatest Common Factor(GCF) of 21, 53, 70, 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, 53, 70, 155) = 1.