What is the Least Common Multiple of 78220 and 78236?

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 78220 and 78236 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78220 and 78236, than apply into the LCM equation.

GCF(78220,78236) = 4
LCM(78220,78236) = ( 78220 × 78236) / 4
LCM(78220,78236) = 6119619920 / 4
LCM(78220,78236) = 1529904980

Least Common Multiple (LCM) of 78220 and 78236 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78220 and 78236. First we will calculate the prime factors of 78220 and 78236.

Prime Factorization of 78220

Prime Factorization of 78236

Now multiplying the highest exponent prime factors to calculate the LCM of 78220 and 78236.

LCM(78220,78236) = 2² × 5¹ × 3911¹ × 19559¹
LCM(78220,78236) = 1529904980