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What is the Least Common Multiple of 67990 and 68004?

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 67990 and 68004 is 2311795980.

LCM(67990,68004) = 2311795980

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Least Common Multiple of 67990 and 68004 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 67990 and 68004, than apply into the LCM equation.

GCF(67990,68004) = 2
LCM(67990,68004) = ( 67990 × 68004) / 2
LCM(67990,68004) = 4623591960 / 2
LCM(67990,68004) = 2311795980

Least Common Multiple (LCM) of 67990 and 68004 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 67990 and 68004. First we will calculate the prime factors of 67990 and 68004.

Prime Factorization of 67990

Prime factors of 67990 are 2, 5, 13, 523. Prime factorization of 67990 in exponential form is:

67990 = 21 × 51 × 131 × 5231

Prime Factorization of 68004

Prime factors of 68004 are 2, 3, 1889. Prime factorization of 68004 in exponential form is:

68004 = 22 × 32 × 18891

Now multiplying the highest exponent prime factors to calculate the LCM of 67990 and 68004.

LCM(67990,68004) = 22 × 51 × 131 × 5231 × 32 × 18891
LCM(67990,68004) = 2311795980