What is the Least Common Multiple of 90636 and 90640?

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 90636 and 90640 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 90636 and 90640, than apply into the LCM equation.

GCF(90636,90640) = 4
LCM(90636,90640) = ( 90636 × 90640) / 4
LCM(90636,90640) = 8215247040 / 4
LCM(90636,90640) = 2053811760

Least Common Multiple (LCM) of 90636 and 90640 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 90636 and 90640. First we will calculate the prime factors of 90636 and 90640.

Prime Factorization of 90636

Prime Factorization of 90640

Now multiplying the highest exponent prime factors to calculate the LCM of 90636 and 90640.

LCM(90636,90640) = 2⁴ × 3¹ × 7¹ × 13¹ × 83¹ × 5¹ × 11¹ × 103¹
LCM(90636,90640) = 2053811760