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What is the Least Common Multiple of 1415 and 1422?

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 1415 and 1422 is 2012130.

LCM(1415,1422) = 2012130

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Least Common Multiple of 1415 and 1422 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1415 and 1422, than apply into the LCM equation.

GCF(1415,1422) = 1
LCM(1415,1422) = ( 1415 × 1422) / 1
LCM(1415,1422) = 2012130 / 1
LCM(1415,1422) = 2012130

Least Common Multiple (LCM) of 1415 and 1422 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1415 and 1422. First we will calculate the prime factors of 1415 and 1422.

Prime Factorization of 1415

Prime factors of 1415 are 5, 283. Prime factorization of 1415 in exponential form is:

1415 = 51 × 2831

Prime Factorization of 1422

Prime factors of 1422 are 2, 3, 79. Prime factorization of 1422 in exponential form is:

1422 = 21 × 32 × 791

Now multiplying the highest exponent prime factors to calculate the LCM of 1415 and 1422.

LCM(1415,1422) = 51 × 2831 × 21 × 32 × 791
LCM(1415,1422) = 2012130