What is the Least Common Multiple of 78455 and 78475?

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 78455 and 78475 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78455 and 78475, than apply into the LCM equation.

GCF(78455,78475) = 5
LCM(78455,78475) = ( 78455 × 78475) / 5
LCM(78455,78475) = 6156756125 / 5
LCM(78455,78475) = 1231351225

Least Common Multiple (LCM) of 78455 and 78475 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78455 and 78475. First we will calculate the prime factors of 78455 and 78475.

Prime Factorization of 78455

Prime Factorization of 78475

Now multiplying the highest exponent prime factors to calculate the LCM of 78455 and 78475.

LCM(78455,78475) = 5² × 13¹ × 17¹ × 71¹ × 43¹ × 73¹
LCM(78455,78475) = 1231351225