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What is the Least Common Multiple of 67392 and 67405?

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 67392 and 67405 is 349427520.

LCM(67392,67405) = 349427520

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Least Common Multiple of 67392 and 67405 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 67392 and 67405, than apply into the LCM equation.

GCF(67392,67405) = 13
LCM(67392,67405) = ( 67392 × 67405) / 13
LCM(67392,67405) = 4542557760 / 13
LCM(67392,67405) = 349427520

Least Common Multiple (LCM) of 67392 and 67405 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 67392 and 67405. First we will calculate the prime factors of 67392 and 67405.

Prime Factorization of 67392

Prime factors of 67392 are 2, 3, 13. Prime factorization of 67392 in exponential form is:

67392 = 26 × 34 × 131

Prime Factorization of 67405

Prime factors of 67405 are 5, 13, 17, 61. Prime factorization of 67405 in exponential form is:

67405 = 51 × 131 × 171 × 611

Now multiplying the highest exponent prime factors to calculate the LCM of 67392 and 67405.

LCM(67392,67405) = 26 × 34 × 131 × 51 × 171 × 611
LCM(67392,67405) = 349427520