The factors of 115 are 1, 5, 23, 115
For them to be common, they need to be compared to another set of factors.
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The common factors are: 1, 23.
The first step to find the gcf of 85 and 145 is to list the factors of each number. The factors of 85 are 1, 5, 17 and 85. The factors of 145 are 1, 5, 29 and 145. So, the Greatest Common Factor for these numbers is 5 because it divides all them without a remainder.
1, 5, 23, 25, 115, 575
The greatest common factor (GCF) is 5.
The factors of 1725 are: 1 3 5 15 23 25 69 75 115 345 575 1725. The prime factors are: 3, 5, 23