What is the Least Common Multiple of 81218 and 81238?

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 81218 and 81238 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81218 and 81238, than apply into the LCM equation.

GCF(81218,81238) = 2
LCM(81218,81238) = ( 81218 × 81238) / 2
LCM(81218,81238) = 6597987884 / 2
LCM(81218,81238) = 3298993942

Least Common Multiple (LCM) of 81218 and 81238 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81218 and 81238. First we will calculate the prime factors of 81218 and 81238.

Prime Factorization of 81218

Prime Factorization of 81238

Now multiplying the highest exponent prime factors to calculate the LCM of 81218 and 81238.

LCM(81218,81238) = 2¹ × 40609¹ × 151¹ × 269¹
LCM(81218,81238) = 3298993942