What is the Least Common Multiple of 81065 and 81085?

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 81065 and 81085 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81065 and 81085, than apply into the LCM equation.

GCF(81065,81085) = 5
LCM(81065,81085) = ( 81065 × 81085) / 5
LCM(81065,81085) = 6573155525 / 5
LCM(81065,81085) = 1314631105

Least Common Multiple (LCM) of 81065 and 81085 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81065 and 81085. First we will calculate the prime factors of 81065 and 81085.

Prime Factorization of 81065

Prime Factorization of 81085

Now multiplying the highest exponent prime factors to calculate the LCM of 81065 and 81085.

LCM(81065,81085) = 5¹ × 31¹ × 523¹ × 16217¹
LCM(81065,81085) = 1314631105