Greatest Common Factor of 13, 21, 745

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

• Greatest Common Factor of 13, 21, 745 by common division method
• Greatest Common Factor of 13, 21, 745 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 13

List of positive integer factors of 13 that divides 13 without a remainder.

1,13

Factors of 21

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

1,3,7,21

Factors of 745

List of positive integer factors of 745 that divides 745 without a remainder.

1,5,149,745

Greatest Common Factor

We found the factors 13,21,745 . The biggest common factor number is the GCF number.
So the greatest common factor 13,21,745 is 1.

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

• GCF of 61, 77, 648
• GCF of 61, 69, 225
• GCF of 55, 61, 798
• GCF of 17, 49, 958
• GCF of 70, 25, 365

1. What is the GCF of 13, 21, 745?

Answer: GCF of 13, 21, 745 is 1.

2. How to Find the GCF of 13, 21, 745

Answer: Greatest Common Factor(GCF) of 13, 21, 745 = 1

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

Step 2: Then multiply all the prime factors GCF(13, 21, 745) = 1.