### What is the trick to finding the greatest common factor?

The following answer describes four methods of finding the greatest common factor, with examples, and several "tricks" or shortcuts that can make it easier. Method: Guess and Refine Sometimes, you can look at two numbers and make a good guess that you can refine. Example 1: Find the greatest common factor of 45 and 50. Because both numbers end in either a 5 or 0, you know that they are both divisible by 5. If…

### What is the greatest common factor of 52 91 and 104?

First Number: 52 Second Number: 91 Third Number: 104 The Greatest Common Factor (GCF) is: 13 Example Simplified Fraction: 52/91 => 4/7 (4 times 13 =52; 7 times 13=91; 104 divided by 13=8) The Greatest Common Factor of 30, 75, 90 = 15 Example Simplified Fraction: 30/75 => 2/5 The Greatest Common Factor (GCF) is 2 for 118 and 116. Example Simplified Fraction: 118/116 => 59/58 It is a common factor if it is a…

### What are the factors and prime factors of 354?

354 is a composite number because it has factors other than 1 and itself. It is not a prime number. The 8 factors of 354 are 1, 2, 3, 6, 59, 118, 177, and 354. The factor pairs of 354 are 1 x 354, 2 x 177, 3 x 118, and 6 x 59. The proper factors of 354 are 1, 2, 3, 6, 59, 118, and 177 or, if the definition you are using…

### What are the factors and prime factors of 531?

531 is a composite number because it has factors other than 1 and itself. It is not a prime number. The 6 factors of 531 are 1, 3, 9, 59, 177, and 531. The factor pairs of 531 are 1 x 531, 3 x 177, and 9 x 59. The proper factors of 531 are 1, 3, 9, 59, and 177 or, if the definition you are using excludes 1, they are 3, 9, 59…