Counting number

What is the smallest counting number divisible by 2,5,7,8 and 15?

Correct result:

x =  840


2 ...  prime number 5 ...  prime number 7 ...  prime number 8=23 15=35 LCM(2,5,7,8,15)=23357=840  x=LCM(2,5,7,8,15)=840

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