What is the Least Common Multiple of 65415 and 65430?

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 65415 and 65430 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 65415 and 65430, than apply into the LCM equation.

GCF(65415,65430) = 15
LCM(65415,65430) = ( 65415 × 65430) / 15
LCM(65415,65430) = 4280103450 / 15
LCM(65415,65430) = 285340230

Least Common Multiple (LCM) of 65415 and 65430 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 65415 and 65430. First we will calculate the prime factors of 65415 and 65430.

Prime Factorization of 65415

Prime Factorization of 65430

Now multiplying the highest exponent prime factors to calculate the LCM of 65415 and 65430.

LCM(65415,65430) = 3² × 5¹ × 7² × 89¹ × 2¹ × 727¹
LCM(65415,65430) = 285340230