Greatest Common Factor of 30, 81, 69, 145

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

• Greatest Common Factor of 30, 81, 69, 145 by common division method
• Greatest Common Factor of 30, 81, 69, 145 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 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

Factors of 81

List of positive integer factors of 81 that divides 81 without a remainder.

1,3,9,27,81

Factors of 69

List of positive integer factors of 69 that divides 69 without a remainder.

1,3,23,69

Factors of 145

List of positive integer factors of 145 that divides 145 without a remainder.

1,5,29,145

Greatest Common Factor

We found the factors 30,81,69,145 . The biggest common factor number is the GCF number.
So the greatest common factor 30,81,69,145 is 1.

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

• GCF of 80, 30, 73, 559
• GCF of 62, 85, 30, 628
• GCF of 26, 53, 97, 696
• GCF of 52, 13, 13, 368
• GCF of 33, 82, 52, 652

1. What is the GCF of 30, 81, 69, 145?

Answer: GCF of 30, 81, 69, 145 is 1.

2. How to Find the GCF of 30, 81, 69, 145

Answer: Greatest Common Factor(GCF) of 30, 81, 69, 145 = 1

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

Step 2: Then multiply all the prime factors GCF(30, 81, 69, 145) = 1.