What is the Least Common Multiple of 409 and 428?
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 428 is 175052.
LCM(409,428) = 175052
Least Common Multiple of 409 and 428 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 428, than apply into the LCM equation.
GCF(409,428) = 1
LCM(409,428) = ( 409 × 428) / 1
LCM(409,428) = 175052 / 1
LCM(409,428) = 175052
Least Common Multiple (LCM) of 409 and 428 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 409 and 428. First we will calculate the prime factors of 409 and 428.
Prime Factorization of 409
Prime factors of 409 are 409. Prime factorization of 409 in exponential form is:
409 = 4091
Prime Factorization of 428
Prime factors of 428 are 2, 107. Prime factorization of 428 in exponential form is:
428 = 22 × 1071
Now multiplying the highest exponent prime factors to calculate the LCM of 409 and 428.
LCM(409,428) = 4091 × 22 × 1071
LCM(409,428) = 175052
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