What is the Least Common Multiple of 91405 and 91415?

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 91405 and 91415 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 91405 and 91415, than apply into the LCM equation.

GCF(91405,91415) = 5
LCM(91405,91415) = ( 91405 × 91415) / 5
LCM(91405,91415) = 8355788075 / 5
LCM(91405,91415) = 1671157615

Least Common Multiple (LCM) of 91405 and 91415 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 91405 and 91415. First we will calculate the prime factors of 91405 and 91415.

Prime Factorization of 91405

Prime Factorization of 91415

Now multiplying the highest exponent prime factors to calculate the LCM of 91405 and 91415.

LCM(91405,91415) = 5¹ × 101¹ × 181¹ × 47¹ × 389¹
LCM(91405,91415) = 1671157615