What is the Least Common Multiple of 90781 and 90790?

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 90781 and 90790 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 90781 and 90790, than apply into the LCM equation.

GCF(90781,90790) = 1
LCM(90781,90790) = ( 90781 × 90790) / 1
LCM(90781,90790) = 8242006990 / 1
LCM(90781,90790) = 8242006990

Least Common Multiple (LCM) of 90781 and 90790 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 90781 and 90790. First we will calculate the prime factors of 90781 and 90790.

Prime Factorization of 90781

Prime Factorization of 90790

Now multiplying the highest exponent prime factors to calculate the LCM of 90781 and 90790.

LCM(90781,90790) = 23¹ × 3947¹ × 2¹ × 5¹ × 7¹ × 1297¹
LCM(90781,90790) = 8242006990