What is the Least Common Multiple of 78085 and 78105?

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 78085 and 78105 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78085 and 78105, than apply into the LCM equation.

GCF(78085,78105) = 5
LCM(78085,78105) = ( 78085 × 78105) / 5
LCM(78085,78105) = 6098828925 / 5
LCM(78085,78105) = 1219765785

Least Common Multiple (LCM) of 78085 and 78105 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78085 and 78105. First we will calculate the prime factors of 78085 and 78105.

Prime Factorization of 78085

Prime Factorization of 78105

Now multiplying the highest exponent prime factors to calculate the LCM of 78085 and 78105.

LCM(78085,78105) = 5¹ × 7¹ × 23¹ × 97¹ × 3¹ × 41¹ × 127¹
LCM(78085,78105) = 1219765785