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What is the Least Common Multiple of 68390 and 68403?

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 (LCM) of 68390 and 68403 is 4678081170.

LCM(68390,68403) = 4678081170

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Least Common Multiple of 68390 and 68403 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 68390 and 68403, than apply into the LCM equation.

GCF(68390,68403) = 1
LCM(68390,68403) = ( 68390 × 68403) / 1
LCM(68390,68403) = 4678081170 / 1
LCM(68390,68403) = 4678081170

Least Common Multiple (LCM) of 68390 and 68403 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 68390 and 68403. First we will calculate the prime factors of 68390 and 68403.

Prime Factorization of 68390

Prime factors of 68390 are 2, 5, 7, 977. Prime factorization of 68390 in exponential form is:

68390 = 21 × 51 × 71 × 9771

Prime Factorization of 68403

Prime factors of 68403 are 3, 151. Prime factorization of 68403 in exponential form is:

68403 = 31 × 1512

Now multiplying the highest exponent prime factors to calculate the LCM of 68390 and 68403.

LCM(68390,68403) = 21 × 51 × 71 × 9771 × 31 × 1512
LCM(68390,68403) = 4678081170