What is the Least Common Multiple of 66978 and 66989?

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 66978 and 66989 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 66978 and 66989, than apply into the LCM equation.

GCF(66978,66989) = 1
LCM(66978,66989) = ( 66978 × 66989) / 1
LCM(66978,66989) = 4486789242 / 1
LCM(66978,66989) = 4486789242

Least Common Multiple (LCM) of 66978 and 66989 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 66978 and 66989. First we will calculate the prime factors of 66978 and 66989.

Prime Factorization of 66978

Prime Factorization of 66989

Now multiplying the highest exponent prime factors to calculate the LCM of 66978 and 66989.

LCM(66978,66989) = 2¹ × 3² × 61² × 13¹ × 5153¹
LCM(66978,66989) = 4486789242