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What is the Least Common Multiple of 29981 and 29991?

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 29981 and 29991 is 899160171.

LCM(29981,29991) = 899160171

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Least Common Multiple of 29981 and 29991 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 29981 and 29991, than apply into the LCM equation.

GCF(29981,29991) = 1
LCM(29981,29991) = ( 29981 × 29991) / 1
LCM(29981,29991) = 899160171 / 1
LCM(29981,29991) = 899160171

Least Common Multiple (LCM) of 29981 and 29991 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 29981 and 29991. First we will calculate the prime factors of 29981 and 29991.

Prime Factorization of 29981

Prime factors of 29981 are 7, 4283. Prime factorization of 29981 in exponential form is:

29981 = 71 × 42831

Prime Factorization of 29991

Prime factors of 29991 are 3, 13, 769. Prime factorization of 29991 in exponential form is:

29991 = 31 × 131 × 7691

Now multiplying the highest exponent prime factors to calculate the LCM of 29981 and 29991.

LCM(29981,29991) = 71 × 42831 × 31 × 131 × 7691
LCM(29981,29991) = 899160171