Greatest Common Factor of 29, 70, 45, 21

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

• Greatest Common Factor of 29, 70, 45, 21 by common division method
• Greatest Common Factor of 29, 70, 45, 21 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 29

List of positive integer factors of 29 that divides 29 without a remainder.

1,29

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 45

List of positive integer factors of 45 that divides 45 without a remainder.

1,3,5,9,15,45

Factors of 21

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

1,3,7,21

Greatest Common Factor

We found the factors 29,70,45,21 . The biggest common factor number is the GCF number.
So the greatest common factor 29,70,45,21 is 1.

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

• GCF of 55, 10, 40, 80
• GCF of 35, 89, 97, 19
• GCF of 51, 43, 60, 37
• GCF of 79, 95, 41, 59
• GCF of 54, 87, 83, 26

1. What is the GCF of 29, 70, 45, 21?

Answer: GCF of 29, 70, 45, 21 is 1.

2. How to Find the GCF of 29, 70, 45, 21

Answer: Greatest Common Factor(GCF) of 29, 70, 45, 21 = 1

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

Step 2: Then multiply all the prime factors GCF(29, 70, 45, 21) = 1.