What is the Least Common Multiple of 81115 and 81128?

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 81115 and 81128 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81115 and 81128, than apply into the LCM equation.

GCF(81115,81128) = 1
LCM(81115,81128) = ( 81115 × 81128) / 1
LCM(81115,81128) = 6580697720 / 1
LCM(81115,81128) = 6580697720

Least Common Multiple (LCM) of 81115 and 81128 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81115 and 81128. First we will calculate the prime factors of 81115 and 81128.

Prime Factorization of 81115

Prime Factorization of 81128

Now multiplying the highest exponent prime factors to calculate the LCM of 81115 and 81128.

LCM(81115,81128) = 5¹ × 16223¹ × 2³ × 10141¹
LCM(81115,81128) = 6580697720