What is the Least Common Multiple of 39509 and 39515?

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 39509 and 39515 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 39509 and 39515, than apply into the LCM equation.

GCF(39509,39515) = 1
LCM(39509,39515) = ( 39509 × 39515) / 1
LCM(39509,39515) = 1561198135 / 1
LCM(39509,39515) = 1561198135

Least Common Multiple (LCM) of 39509 and 39515 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 39509 and 39515. First we will calculate the prime factors of 39509 and 39515.

Prime Factorization of 39509

Prime Factorization of 39515

Now multiplying the highest exponent prime factors to calculate the LCM of 39509 and 39515.

LCM(39509,39515) = 39509¹ × 5¹ × 7¹ × 1129¹
LCM(39509,39515) = 1561198135