What is the Least Common Multiple of 550 and 556?
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 550 and 556 is 152900.
LCM(550,556) = 152900
Least Common Multiple of 550 and 556 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 550 and 556, than apply into the LCM equation.
GCF(550,556) = 2
LCM(550,556) = ( 550 × 556) / 2
LCM(550,556) = 305800 / 2
LCM(550,556) = 152900
Least Common Multiple (LCM) of 550 and 556 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 550 and 556. First we will calculate the prime factors of 550 and 556.
Prime Factorization of 550
Prime factors of 550 are 2, 5, 11. Prime factorization of 550 in exponential form is:
550 = 21 × 52 × 111
Prime Factorization of 556
Prime factors of 556 are 2, 139. Prime factorization of 556 in exponential form is:
556 = 22 × 1391
Now multiplying the highest exponent prime factors to calculate the LCM of 550 and 556.
LCM(550,556) = 22 × 52 × 111 × 1391
LCM(550,556) = 152900
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