What is the Least Common Multiple of 65978 and 65990?

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 65978 and 65990 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 65978 and 65990, than apply into the LCM equation.

GCF(65978,65990) = 2
LCM(65978,65990) = ( 65978 × 65990) / 2
LCM(65978,65990) = 4353888220 / 2
LCM(65978,65990) = 2176944110

Least Common Multiple (LCM) of 65978 and 65990 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 65978 and 65990. First we will calculate the prime factors of 65978 and 65990.

Prime Factorization of 65978

Prime Factorization of 65990

Now multiplying the highest exponent prime factors to calculate the LCM of 65978 and 65990.

LCM(65978,65990) = 2¹ × 11¹ × 2999¹ × 5¹ × 6599¹
LCM(65978,65990) = 2176944110