What is the Least Common Multiple of 399 and 413?
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 399 and 413 is 23541.
LCM(399,413) = 23541
Least Common Multiple of 399 and 413 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 399 and 413, than apply into the LCM equation.
GCF(399,413) = 7
LCM(399,413) = ( 399 × 413) / 7
LCM(399,413) = 164787 / 7
LCM(399,413) = 23541
Least Common Multiple (LCM) of 399 and 413 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 399 and 413. First we will calculate the prime factors of 399 and 413.
Prime Factorization of 399
Prime factors of 399 are 3, 7, 19. Prime factorization of 399 in exponential form is:
399 = 31 × 71 × 191
Prime Factorization of 413
Prime factors of 413 are 7, 59. Prime factorization of 413 in exponential form is:
413 = 71 × 591
Now multiplying the highest exponent prime factors to calculate the LCM of 399 and 413.
LCM(399,413) = 31 × 71 × 191 × 591
LCM(399,413) = 23541
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