What is the Least Common Multiple of 78475 and 78490?

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 78475 and 78490 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78475 and 78490, than apply into the LCM equation.

GCF(78475,78490) = 5
LCM(78475,78490) = ( 78475 × 78490) / 5
LCM(78475,78490) = 6159502750 / 5
LCM(78475,78490) = 1231900550

Least Common Multiple (LCM) of 78475 and 78490 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78475 and 78490. First we will calculate the prime factors of 78475 and 78490.

Prime Factorization of 78475

Prime Factorization of 78490

Now multiplying the highest exponent prime factors to calculate the LCM of 78475 and 78490.

LCM(78475,78490) = 5² × 43¹ × 73¹ × 2¹ × 47¹ × 167¹
LCM(78475,78490) = 1231900550