What is the Least Common Multiple of 78115 and 78135?

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 78115 and 78135 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78115 and 78135, than apply into the LCM equation.

GCF(78115,78135) = 5
LCM(78115,78135) = ( 78115 × 78135) / 5
LCM(78115,78135) = 6103515525 / 5
LCM(78115,78135) = 1220703105

Least Common Multiple (LCM) of 78115 and 78135 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78115 and 78135. First we will calculate the prime factors of 78115 and 78135.

Prime Factorization of 78115

Prime Factorization of 78135

Now multiplying the highest exponent prime factors to calculate the LCM of 78115 and 78135.

LCM(78115,78135) = 5¹ × 17¹ × 919¹ × 3¹ × 5209¹
LCM(78115,78135) = 1220703105