What is the Least Common Multiple of 81778 and 81785?

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 81778 and 81785 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81778 and 81785, than apply into the LCM equation.

GCF(81778,81785) = 1
LCM(81778,81785) = ( 81778 × 81785) / 1
LCM(81778,81785) = 6688213730 / 1
LCM(81778,81785) = 6688213730

Least Common Multiple (LCM) of 81778 and 81785 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81778 and 81785. First we will calculate the prime factors of 81778 and 81785.

Prime Factorization of 81778

Prime Factorization of 81785

Now multiplying the highest exponent prime factors to calculate the LCM of 81778 and 81785.

LCM(81778,81785) = 2¹ × 31¹ × 1319¹ × 5¹ × 11¹ × 1487¹
LCM(81778,81785) = 6688213730