What is the Least Common Multiple of 68800 and 68815?

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 68800 and 68815 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 68800 and 68815, than apply into the LCM equation.

GCF(68800,68815) = 5
LCM(68800,68815) = ( 68800 × 68815) / 5
LCM(68800,68815) = 4734472000 / 5
LCM(68800,68815) = 946894400

Least Common Multiple (LCM) of 68800 and 68815 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 68800 and 68815. First we will calculate the prime factors of 68800 and 68815.

Prime Factorization of 68800

Prime Factorization of 68815

Now multiplying the highest exponent prime factors to calculate the LCM of 68800 and 68815.

LCM(68800,68815) = 2⁶ × 5² × 43¹ × 13763¹
LCM(68800,68815) = 946894400