What is the Least Common Multiple of 605 and 609?
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 605 and 609 is 368445.
LCM(605,609) = 368445
Least Common Multiple of 605 and 609 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 605 and 609, than apply into the LCM equation.
GCF(605,609) = 1
LCM(605,609) = ( 605 × 609) / 1
LCM(605,609) = 368445 / 1
LCM(605,609) = 368445
Least Common Multiple (LCM) of 605 and 609 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 605 and 609. First we will calculate the prime factors of 605 and 609.
Prime Factorization of 605
Prime factors of 605 are 5, 11. Prime factorization of 605 in exponential form is:
605 = 51 × 112
Prime Factorization of 609
Prime factors of 609 are 3, 7, 29. Prime factorization of 609 in exponential form is:
609 = 31 × 71 × 291
Now multiplying the highest exponent prime factors to calculate the LCM of 605 and 609.
LCM(605,609) = 51 × 112 × 31 × 71 × 291
LCM(605,609) = 368445
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