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What is the Least Common Multiple of 67782 and 67790?

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 67782 and 67790 is 2297470890.

LCM(67782,67790) = 2297470890

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Least Common Multiple of 67782 and 67790 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 67782 and 67790, than apply into the LCM equation.

GCF(67782,67790) = 2
LCM(67782,67790) = ( 67782 × 67790) / 2
LCM(67782,67790) = 4594941780 / 2
LCM(67782,67790) = 2297470890

Least Common Multiple (LCM) of 67782 and 67790 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 67782 and 67790. First we will calculate the prime factors of 67782 and 67790.

Prime Factorization of 67782

Prime factors of 67782 are 2, 3, 11, 13, 79. Prime factorization of 67782 in exponential form is:

67782 = 21 × 31 × 111 × 131 × 791

Prime Factorization of 67790

Prime factors of 67790 are 2, 5, 6779. Prime factorization of 67790 in exponential form is:

67790 = 21 × 51 × 67791

Now multiplying the highest exponent prime factors to calculate the LCM of 67782 and 67790.

LCM(67782,67790) = 21 × 31 × 111 × 131 × 791 × 51 × 67791
LCM(67782,67790) = 2297470890