What is the Least Common Multiple of 409 and 415?
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 409 and 415 is 169735.
LCM(409,415) = 169735
Least Common Multiple of 409 and 415 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 409 and 415, than apply into the LCM equation.
GCF(409,415) = 1
LCM(409,415) = ( 409 × 415) / 1
LCM(409,415) = 169735 / 1
LCM(409,415) = 169735
Least Common Multiple (LCM) of 409 and 415 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 409 and 415. First we will calculate the prime factors of 409 and 415.
Prime Factorization of 409
Prime factors of 409 are 409. Prime factorization of 409 in exponential form is:
409 = 4091
Prime Factorization of 415
Prime factors of 415 are 5, 83. Prime factorization of 415 in exponential form is:
415 = 51 × 831
Now multiplying the highest exponent prime factors to calculate the LCM of 409 and 415.
LCM(409,415) = 4091 × 51 × 831
LCM(409,415) = 169735
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