What is the Least Common Multiple of 78045 and 78065?

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 78045 and 78065 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78045 and 78065, than apply into the LCM equation.

GCF(78045,78065) = 5
LCM(78045,78065) = ( 78045 × 78065) / 5
LCM(78045,78065) = 6092582925 / 5
LCM(78045,78065) = 1218516585

Least Common Multiple (LCM) of 78045 and 78065 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78045 and 78065. First we will calculate the prime factors of 78045 and 78065.

Prime Factorization of 78045

Prime Factorization of 78065

Now multiplying the highest exponent prime factors to calculate the LCM of 78045 and 78065.

LCM(78045,78065) = 3¹ × 5¹ × 11² × 43¹ × 13¹ × 1201¹
LCM(78045,78065) = 1218516585