What is the Least Common Multiple of 66978 and 66988?

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 66988 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 66988, than apply into the LCM equation.

GCF(66978,66988) = 2
LCM(66978,66988) = ( 66978 × 66988) / 2
LCM(66978,66988) = 4486722264 / 2
LCM(66978,66988) = 2243361132

Least Common Multiple (LCM) of 66978 and 66988 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 66978 and 66988. First we will calculate the prime factors of 66978 and 66988.

Prime Factorization of 66978

Prime Factorization of 66988

Now multiplying the highest exponent prime factors to calculate the LCM of 66978 and 66988.

LCM(66978,66988) = 2² × 3² × 61² × 16747¹
LCM(66978,66988) = 2243361132