What is the Least Common Multiple of 81434 and 81442?

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 81434 and 81442 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81434 and 81442, than apply into the LCM equation.

GCF(81434,81442) = 2
LCM(81434,81442) = ( 81434 × 81442) / 2
LCM(81434,81442) = 6632147828 / 2
LCM(81434,81442) = 3316073914

Least Common Multiple (LCM) of 81434 and 81442 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81434 and 81442. First we will calculate the prime factors of 81434 and 81442.

Prime Factorization of 81434

Prime Factorization of 81442

Now multiplying the highest exponent prime factors to calculate the LCM of 81434 and 81442.

LCM(81434,81442) = 2¹ × 19¹ × 2143¹ × 43¹ × 947¹
LCM(81434,81442) = 3316073914