1, 3, 5 and 15
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Least Common Multiple (LCM) for 195 260 is 780
When finding the GCF of a set of numbers, firstly express each number as a product of its prime factors. 117 = 3 x 3 x 13 195 = 3 x 5 x 13 The factors that each number have in common are 3 and 13. The Greatest Common Factor is therefore 3 x 13 = 39.
The GCF is 65.
The largest number that goes into 150, 160, and 255 is 5.
The prime factors are: 3 x 5 x 133 x 5 x 13 = 195