What is the Least Common Multiple of 91390 and 91403?

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 91390 and 91403 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 91390 and 91403, than apply into the LCM equation.

GCF(91390,91403) = 13
LCM(91390,91403) = ( 91390 × 91403) / 13
LCM(91390,91403) = 8353320170 / 13
LCM(91390,91403) = 642563090

Least Common Multiple (LCM) of 91390 and 91403 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 91390 and 91403. First we will calculate the prime factors of 91390 and 91403.

Prime Factorization of 91390

Prime Factorization of 91403

Now multiplying the highest exponent prime factors to calculate the LCM of 91390 and 91403.

LCM(91390,91403) = 2¹ × 5¹ × 13¹ × 19¹ × 37¹ × 79¹ × 89¹
LCM(91390,91403) = 642563090