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What is the Least Common Multiple of 68315 and 68320?

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 68315 and 68320 is 933456160.

LCM(68315,68320) = 933456160

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Least Common Multiple of 68315 and 68320 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 68315 and 68320, than apply into the LCM equation.

GCF(68315,68320) = 5
LCM(68315,68320) = ( 68315 × 68320) / 5
LCM(68315,68320) = 4667280800 / 5
LCM(68315,68320) = 933456160

Least Common Multiple (LCM) of 68315 and 68320 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 68315 and 68320. First we will calculate the prime factors of 68315 and 68320.

Prime Factorization of 68315

Prime factors of 68315 are 5, 13, 1051. Prime factorization of 68315 in exponential form is:

68315 = 51 × 131 × 10511

Prime Factorization of 68320

Prime factors of 68320 are 2, 5, 7, 61. Prime factorization of 68320 in exponential form is:

68320 = 25 × 51 × 71 × 611

Now multiplying the highest exponent prime factors to calculate the LCM of 68315 and 68320.

LCM(68315,68320) = 51 × 131 × 10511 × 25 × 71 × 611
LCM(68315,68320) = 933456160