What is the Least Common Multiple of 78956 and 78972?

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 78956 and 78972 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78956 and 78972, than apply into the LCM equation.

GCF(78956,78972) = 4
LCM(78956,78972) = ( 78956 × 78972) / 4
LCM(78956,78972) = 6235313232 / 4
LCM(78956,78972) = 1558828308

Least Common Multiple (LCM) of 78956 and 78972 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78956 and 78972. First we will calculate the prime factors of 78956 and 78972.

Prime Factorization of 78956

Prime Factorization of 78972

Now multiplying the highest exponent prime factors to calculate the LCM of 78956 and 78972.

LCM(78956,78972) = 2² × 19739¹ × 3¹ × 6581¹
LCM(78956,78972) = 1558828308