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What is the Least Common Multiple of 68445 and 68458?

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 68445 and 68458 is 360431370.

LCM(68445,68458) = 360431370

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Least Common Multiple of 68445 and 68458 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 68445 and 68458, than apply into the LCM equation.

GCF(68445,68458) = 13
LCM(68445,68458) = ( 68445 × 68458) / 13
LCM(68445,68458) = 4685607810 / 13
LCM(68445,68458) = 360431370

Least Common Multiple (LCM) of 68445 and 68458 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 68445 and 68458. First we will calculate the prime factors of 68445 and 68458.

Prime Factorization of 68445

Prime factors of 68445 are 3, 5, 13. Prime factorization of 68445 in exponential form is:

68445 = 34 × 51 × 132

Prime Factorization of 68458

Prime factors of 68458 are 2, 13, 2633. Prime factorization of 68458 in exponential form is:

68458 = 21 × 131 × 26331

Now multiplying the highest exponent prime factors to calculate the LCM of 68445 and 68458.

LCM(68445,68458) = 34 × 51 × 132 × 21 × 26331
LCM(68445,68458) = 360431370