What is the Least Common Multiple of 408 and 425?
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 408 and 425 is 10200.
LCM(408,425) = 10200
Least Common Multiple of 408 and 425 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 408 and 425, than apply into the LCM equation.
GCF(408,425) = 17
LCM(408,425) = ( 408 × 425) / 17
LCM(408,425) = 173400 / 17
LCM(408,425) = 10200
Least Common Multiple (LCM) of 408 and 425 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 408 and 425. First we will calculate the prime factors of 408 and 425.
Prime Factorization of 408
Prime factors of 408 are 2, 3, 17. Prime factorization of 408 in exponential form is:
408 = 23 × 31 × 171
Prime Factorization of 425
Prime factors of 425 are 5, 17. Prime factorization of 425 in exponential form is:
425 = 52 × 171
Now multiplying the highest exponent prime factors to calculate the LCM of 408 and 425.
LCM(408,425) = 23 × 31 × 171 × 52
LCM(408,425) = 10200
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