What is the Least Common Multiple of 395 and 401?
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 395 and 401 is 158395.
LCM(395,401) = 158395
Least Common Multiple of 395 and 401 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 395 and 401, than apply into the LCM equation.
GCF(395,401) = 1
LCM(395,401) = ( 395 × 401) / 1
LCM(395,401) = 158395 / 1
LCM(395,401) = 158395
Least Common Multiple (LCM) of 395 and 401 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 395 and 401. First we will calculate the prime factors of 395 and 401.
Prime Factorization of 395
Prime factors of 395 are 5, 79. Prime factorization of 395 in exponential form is:
395 = 51 × 791
Prime Factorization of 401
Prime factors of 401 are 401. Prime factorization of 401 in exponential form is:
401 = 4011
Now multiplying the highest exponent prime factors to calculate the LCM of 395 and 401.
LCM(395,401) = 51 × 791 × 4011
LCM(395,401) = 158395
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