What is the Least Common Multiple of 81521 and 81530?

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 81521 and 81530 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81521 and 81530, than apply into the LCM equation.

GCF(81521,81530) = 1
LCM(81521,81530) = ( 81521 × 81530) / 1
LCM(81521,81530) = 6646407130 / 1
LCM(81521,81530) = 6646407130

Least Common Multiple (LCM) of 81521 and 81530 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81521 and 81530. First we will calculate the prime factors of 81521 and 81530.

Prime Factorization of 81521

Prime Factorization of 81530

Now multiplying the highest exponent prime factors to calculate the LCM of 81521 and 81530.

LCM(81521,81530) = 11¹ × 7411¹ × 2¹ × 5¹ × 31¹ × 263¹
LCM(81521,81530) = 6646407130