What is the Least Common Multiple of 89990 and 90010?

Least common multiple or lowest common denominator (lcd) can be calculated in two way; with the LCM formula calculation of greatest common factor (GCF), or multiplying the prime factors with the highest exponent factor.

Least Common Multiple of 89990 and 90010 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 89990 and 90010, than apply into the LCM equation.

GCF(89990,90010) = 10
LCM(89990,90010) = ( 89990 × 90010) / 10
LCM(89990,90010) = 8099999900 / 10
LCM(89990,90010) = 809999990

Least Common Multiple (LCM) of 89990 and 90010 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 89990 and 90010. First we will calculate the prime factors of 89990 and 90010.

Prime Factorization of 89990

Prime Factorization of 90010

Now multiplying the highest exponent prime factors to calculate the LCM of 89990 and 90010.

LCM(89990,90010) = 2¹ × 5¹ × 8999¹ × 9001¹
LCM(89990,90010) = 809999990