What is the Least Common Multiple of 290 and 309?
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 290 and 309 is 89610.
LCM(290,309) = 89610
Least Common Multiple of 290 and 309 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 290 and 309, than apply into the LCM equation.
GCF(290,309) = 1
LCM(290,309) = ( 290 × 309) / 1
LCM(290,309) = 89610 / 1
LCM(290,309) = 89610
Least Common Multiple (LCM) of 290 and 309 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 290 and 309. First we will calculate the prime factors of 290 and 309.
Prime Factorization of 290
Prime factors of 290 are 2, 5, 29. Prime factorization of 290 in exponential form is:
290 = 21 × 51 × 291
Prime Factorization of 309
Prime factors of 309 are 3, 103. Prime factorization of 309 in exponential form is:
309 = 31 × 1031
Now multiplying the highest exponent prime factors to calculate the LCM of 290 and 309.
LCM(290,309) = 21 × 51 × 291 × 31 × 1031
LCM(290,309) = 89610
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