What is the Least Common Multiple of 4978 and 4997?

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 4978 and 4997 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 4978 and 4997, than apply into the LCM equation.

GCF(4978,4997) = 19
LCM(4978,4997) = ( 4978 × 4997) / 19
LCM(4978,4997) = 24875066 / 19
LCM(4978,4997) = 1309214

Least Common Multiple (LCM) of 4978 and 4997 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 4978 and 4997. First we will calculate the prime factors of 4978 and 4997.

Prime Factorization of 4978

Prime Factorization of 4997

Now multiplying the highest exponent prime factors to calculate the LCM of 4978 and 4997.

LCM(4978,4997) = 2¹ × 19¹ × 131¹ × 263¹
LCM(4978,4997) = 1309214