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What is the Least Common Multiple of 55290 and 55309?

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 55290 and 55309 is 160949190.

LCM(55290,55309) = 160949190

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Least Common Multiple of 55290 and 55309 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 55290 and 55309, than apply into the LCM equation.

GCF(55290,55309) = 19
LCM(55290,55309) = ( 55290 × 55309) / 19
LCM(55290,55309) = 3058034610 / 19
LCM(55290,55309) = 160949190

Least Common Multiple (LCM) of 55290 and 55309 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 55290 and 55309. First we will calculate the prime factors of 55290 and 55309.

Prime Factorization of 55290

Prime factors of 55290 are 2, 3, 5, 19, 97. Prime factorization of 55290 in exponential form is:

55290 = 21 × 31 × 51 × 191 × 971

Prime Factorization of 55309

Prime factors of 55309 are 19, 41, 71. Prime factorization of 55309 in exponential form is:

55309 = 191 × 411 × 711

Now multiplying the highest exponent prime factors to calculate the LCM of 55290 and 55309.

LCM(55290,55309) = 21 × 31 × 51 × 191 × 971 × 411 × 711
LCM(55290,55309) = 160949190