What is the Least Common Multiple of 78505 and 78518?

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 78505 and 78518 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78505 and 78518, than apply into the LCM equation.

GCF(78505,78518) = 1
LCM(78505,78518) = ( 78505 × 78518) / 1
LCM(78505,78518) = 6164055590 / 1
LCM(78505,78518) = 6164055590

Least Common Multiple (LCM) of 78505 and 78518 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78505 and 78518. First we will calculate the prime factors of 78505 and 78518.

Prime Factorization of 78505

Prime Factorization of 78518

Now multiplying the highest exponent prime factors to calculate the LCM of 78505 and 78518.

LCM(78505,78518) = 5¹ × 7¹ × 2243¹ × 2¹ × 11¹ × 43¹ × 83¹
LCM(78505,78518) = 6164055590