What is the Least Common Multiple of 68490 and 68509?

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 68490 and 68509 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 68490 and 68509, than apply into the LCM equation.

GCF(68490,68509) = 1
LCM(68490,68509) = ( 68490 × 68509) / 1
LCM(68490,68509) = 4692181410 / 1
LCM(68490,68509) = 4692181410

Least Common Multiple (LCM) of 68490 and 68509 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 68490 and 68509. First we will calculate the prime factors of 68490 and 68509.

Prime Factorization of 68490

Prime Factorization of 68509

Now multiplying the highest exponent prime factors to calculate the LCM of 68490 and 68509.

LCM(68490,68509) = 2¹ × 3² × 5¹ × 761¹ × 7¹ × 9787¹
LCM(68490,68509) = 4692181410