What is the Least Common Multiple of 7842 and 7860?
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 7842 and 7860 is 10273020.
LCM(7842,7860) = 10273020
Least Common Multiple of 7842 and 7860 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7842 and 7860, than apply into the LCM equation.
GCF(7842,7860) = 6
LCM(7842,7860) = ( 7842 × 7860) / 6
LCM(7842,7860) = 61638120 / 6
LCM(7842,7860) = 10273020
Least Common Multiple (LCM) of 7842 and 7860 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 7842 and 7860. First we will calculate the prime factors of 7842 and 7860.
Prime Factorization of 7842
Prime factors of 7842 are 2, 3, 1307. Prime factorization of 7842 in exponential form is:
7842 = 21 × 31 × 13071
Prime Factorization of 7860
Prime factors of 7860 are 2, 3, 5, 131. Prime factorization of 7860 in exponential form is:
7860 = 22 × 31 × 51 × 1311
Now multiplying the highest exponent prime factors to calculate the LCM of 7842 and 7860.
LCM(7842,7860) = 22 × 31 × 13071 × 51 × 1311
LCM(7842,7860) = 10273020
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