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What is the Least Common Multiple of 10990 and 10997?

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 10990 and 10997 is 17265290.

LCM(10990,10997) = 17265290

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Least Common Multiple of 10990 and 10997 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 10990 and 10997, than apply into the LCM equation.

GCF(10990,10997) = 7
LCM(10990,10997) = ( 10990 × 10997) / 7
LCM(10990,10997) = 120857030 / 7
LCM(10990,10997) = 17265290

Least Common Multiple (LCM) of 10990 and 10997 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 10990 and 10997. First we will calculate the prime factors of 10990 and 10997.

Prime Factorization of 10990

Prime factors of 10990 are 2, 5, 7, 157. Prime factorization of 10990 in exponential form is:

10990 = 21 × 51 × 71 × 1571

Prime Factorization of 10997

Prime factors of 10997 are 7, 1571. Prime factorization of 10997 in exponential form is:

10997 = 71 × 15711

Now multiplying the highest exponent prime factors to calculate the LCM of 10990 and 10997.

LCM(10990,10997) = 21 × 51 × 71 × 1571 × 15711
LCM(10990,10997) = 17265290