What is the Least Common Multiple of 924 and 940?
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 924 and 940 is 217140.
LCM(924,940) = 217140
Least Common Multiple of 924 and 940 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 924 and 940, than apply into the LCM equation.
GCF(924,940) = 4
LCM(924,940) = ( 924 × 940) / 4
LCM(924,940) = 868560 / 4
LCM(924,940) = 217140
Least Common Multiple (LCM) of 924 and 940 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 924 and 940. First we will calculate the prime factors of 924 and 940.
Prime Factorization of 924
Prime factors of 924 are 2, 3, 7, 11. Prime factorization of 924 in exponential form is:
924 = 22 × 31 × 71 × 111
Prime Factorization of 940
Prime factors of 940 are 2, 5, 47. Prime factorization of 940 in exponential form is:
940 = 22 × 51 × 471
Now multiplying the highest exponent prime factors to calculate the LCM of 924 and 940.
LCM(924,940) = 22 × 31 × 71 × 111 × 51 × 471
LCM(924,940) = 217140
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