Best Answer

The lowest common factor of 6 and 15 is 1.

However, I suspect you either want their lowest common multiple (ie the smallest number into which both 6 and 15 divide) or their highest common factor (the largest number which will divided into both 6 and 15).

LCM:

6 = 2 x 3

15 = 3 x 5

LCM = 2 x 3 x 5 = 30

HCF:

6 = 2 x 3

15 = 3 x 5

HCF = 3.

Q: Lowest common factor of 6and 15?

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The factors of 135 are: 1, 3, 5, 9, 15, 27, 45, 135The factors of 165 are: 1, 3, 5, 11, 15, 33, 55, 165The common factors are: 1, 3, 5, 15The Greatest Common Factor: GCF = 15

The greatest common factor of 18 and 15 is 3. You're Welcome VDAWG

The least (or lowest) common factor is 1. The lowest common factor of any combination of numbers will be 1. This is because you can divide every number evenly by 1, including prime numbers (which have themselves and 1 as factors).

The greatest common factor of 15 and 105 is 15.

The GCF is 15.

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It is: 1

The lowest common FACTOR of any set of numbers is 1. Perhaps you meant the Lowest Common MULTIPLE, which for 6, 10, 15 is 30. Or you meant the HIGHEST Common Factor, which for 6, 10, 15 is 1.