What is the Least Common Multiple of 394 and 403?
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 394 and 403 is 158782.
LCM(394,403) = 158782
Least Common Multiple of 394 and 403 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 394 and 403, than apply into the LCM equation.
GCF(394,403) = 1
LCM(394,403) = ( 394 × 403) / 1
LCM(394,403) = 158782 / 1
LCM(394,403) = 158782
Least Common Multiple (LCM) of 394 and 403 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 394 and 403. First we will calculate the prime factors of 394 and 403.
Prime Factorization of 394
Prime factors of 394 are 2, 197. Prime factorization of 394 in exponential form is:
394 = 21 × 1971
Prime Factorization of 403
Prime factors of 403 are 13, 31. Prime factorization of 403 in exponential form is:
403 = 131 × 311
Now multiplying the highest exponent prime factors to calculate the LCM of 394 and 403.
LCM(394,403) = 21 × 1971 × 131 × 311
LCM(394,403) = 158782
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