What is the Least Common Multiple of 81921 and 81929?

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 81921 and 81929 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81921 and 81929, than apply into the LCM equation.

GCF(81921,81929) = 1
LCM(81921,81929) = ( 81921 × 81929) / 1
LCM(81921,81929) = 6711705609 / 1
LCM(81921,81929) = 6711705609

Least Common Multiple (LCM) of 81921 and 81929 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81921 and 81929. First we will calculate the prime factors of 81921 and 81929.

Prime Factorization of 81921

Prime Factorization of 81929

Now multiplying the highest exponent prime factors to calculate the LCM of 81921 and 81929.

LCM(81921,81929) = 3¹ × 7¹ × 47¹ × 83¹ × 81929¹
LCM(81921,81929) = 6711705609