Greatest Common Factor of 257, 438, 13

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

• Greatest Common Factor of 257, 438, 13 by common division method
• Greatest Common Factor of 257, 438, 13 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 257

List of positive integer factors of 257 that divides 257 without a remainder.

1,257

Factors of 438

List of positive integer factors of 438 that divides 438 without a remainder.

1,2,3,6,73,146,219,438

Factors of 13

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

1,13

Greatest Common Factor

We found the factors 257,438,13 . The biggest common factor number is the GCF number.
So the greatest common factor 257,438,13 is 1.

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

• GCF of 654, 226, 92
• GCF of 254, 713, 31
• GCF of 807, 307, 26
• GCF of 525, 389, 60
• GCF of 485, 101, 11

1. What is the GCF of 257, 438, 13?

Answer: GCF of 257, 438, 13 is 1.

2. How to Find the GCF of 257, 438, 13

Answer: Greatest Common Factor(GCF) of 257, 438, 13 = 1

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

Step 2: Then multiply all the prime factors GCF(257, 438, 13) = 1.