What is the Least Common Multiple of 90638 and 90643?

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 90638 and 90643 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 90638 and 90643, than apply into the LCM equation.

GCF(90638,90643) = 1
LCM(90638,90643) = ( 90638 × 90643) / 1
LCM(90638,90643) = 8215700234 / 1
LCM(90638,90643) = 8215700234

Least Common Multiple (LCM) of 90638 and 90643 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 90638 and 90643. First we will calculate the prime factors of 90638 and 90643.

Prime Factorization of 90638

Prime Factorization of 90643

Now multiplying the highest exponent prime factors to calculate the LCM of 90638 and 90643.

LCM(90638,90643) = 2¹ × 45319¹ × 7¹ × 23¹ × 563¹
LCM(90638,90643) = 8215700234