What is the Least Common Multiple of 68615 and 68621?

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 68615 and 68621 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 68615 and 68621, than apply into the LCM equation.

GCF(68615,68621) = 1
LCM(68615,68621) = ( 68615 × 68621) / 1
LCM(68615,68621) = 4708429915 / 1
LCM(68615,68621) = 4708429915

Least Common Multiple (LCM) of 68615 and 68621 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 68615 and 68621. First we will calculate the prime factors of 68615 and 68621.

Prime Factorization of 68615

Prime Factorization of 68621

Now multiplying the highest exponent prime factors to calculate the LCM of 68615 and 68621.

LCM(68615,68621) = 5¹ × 13723¹ × 7¹ × 9803¹
LCM(68615,68621) = 4708429915