What is the Least Common Multiple of 18403 and 18407?
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 18403 and 18407 is 338744021.
LCM(18403,18407) = 338744021
Least Common Multiple of 18403 and 18407 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 18403 and 18407, than apply into the LCM equation.
GCF(18403,18407) = 1
LCM(18403,18407) = ( 18403 × 18407) / 1
LCM(18403,18407) = 338744021 / 1
LCM(18403,18407) = 338744021
Least Common Multiple (LCM) of 18403 and 18407 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 18403 and 18407. First we will calculate the prime factors of 18403 and 18407.
Prime Factorization of 18403
Prime factors of 18403 are 7, 11, 239. Prime factorization of 18403 in exponential form is:
18403 = 71 × 111 × 2391
Prime Factorization of 18407
Prime factors of 18407 are 79, 233. Prime factorization of 18407 in exponential form is:
18407 = 791 × 2331
Now multiplying the highest exponent prime factors to calculate the LCM of 18403 and 18407.
LCM(18403,18407) = 71 × 111 × 2391 × 791 × 2331
LCM(18403,18407) = 338744021
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