What is the Least Common Multiple of 12240 and 12260?
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 12240 and 12260 is 7503120.
LCM(12240,12260) = 7503120
Least Common Multiple of 12240 and 12260 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12240 and 12260, than apply into the LCM equation.
GCF(12240,12260) = 20
LCM(12240,12260) = ( 12240 × 12260) / 20
LCM(12240,12260) = 150062400 / 20
LCM(12240,12260) = 7503120
Least Common Multiple (LCM) of 12240 and 12260 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 12240 and 12260. First we will calculate the prime factors of 12240 and 12260.
Prime Factorization of 12240
Prime factors of 12240 are 2, 3, 5, 17. Prime factorization of 12240 in exponential form is:
12240 = 24 × 32 × 51 × 171
Prime Factorization of 12260
Prime factors of 12260 are 2, 5, 613. Prime factorization of 12260 in exponential form is:
12260 = 22 × 51 × 6131
Now multiplying the highest exponent prime factors to calculate the LCM of 12240 and 12260.
LCM(12240,12260) = 24 × 32 × 51 × 171 × 6131
LCM(12240,12260) = 7503120
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