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There is only one highest common factor which is: hcf(55, 145) = 5

The factors of 55 are: {1, 5, 11, 55}

The factors of 145 are: {1, 5, 29, 145}

The common factors are: {1, 5}

The highest common factor is 5.

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โˆ™ 2014-12-01 21:39:53
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Q: What are all highest common factor of 55 and 145?
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The greatest common factor (GCF) is often also called the greatest common divisor (GCD) or highest common factor (HCF). Keep in mind that these different terms all refer to the same thing: the largest integer which evenly divides two or more numbers.The greatest common factor of 145 and 174223 is 1


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Short answer: There are none. There is neither a greatest common factor nor common factors of a single number, such as 145, because there cannot be any form of common factor without two or more numbers to compare. Common factors are factors that the numbers being compared have in common. The greatest common factor is the largest factor that all the numbers being compared have in common. Thus, since there are not two or more numbers to compare, there are neither common factors nor a greatest common factor. The factors of 145 are 1, 5, 29, and 145. Examples: The common factors of 30 and 145 are 1 and 5; the greatest common factor is 5. The common factors of 145 and 149 are only 1; the greatest common factor is 1. The common factors of 145 and 174 are 1 and 29; the greatest common factor is 29.


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