What is the LCM of 70 and 81?

Answer 1

Method of prime factorization is one of the best methods to find L.C.M.

Prime factorization of 81 = 3x3x3x3

Prime factorization of 70 = 2x5x7

It is clear that nothing is common in Prime Factorization of both numbers.

Also, L.C.M. = Product of common numbers x Product of uncommon factors

So, L.C.M. of 81 and 70 = Product of 81 and 70(Because nothing is common in 71 and 80) = 81 x 70 = 5670

Answer 2

The Least Common Multiple of 70, 81 is 5,670.