What is the Least Common Multiple of 105 and 111?
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 105 and 111 is 3885.
LCM(105,111) = 3885
Least Common Multiple of 105 and 111 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 105 and 111, than apply into the LCM equation.
GCF(105,111) = 3
LCM(105,111) = ( 105 × 111) / 3
LCM(105,111) = 11655 / 3
LCM(105,111) = 3885
Least Common Multiple (LCM) of 105 and 111 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 105 and 111. First we will calculate the prime factors of 105 and 111.
Prime Factorization of 105
Prime factors of 105 are 3, 5, 7. Prime factorization of 105 in exponential form is:
105 = 31 × 51 × 71
Prime Factorization of 111
Prime factors of 111 are 3, 37. Prime factorization of 111 in exponential form is:
111 = 31 × 371
Now multiplying the highest exponent prime factors to calculate the LCM of 105 and 111.
LCM(105,111) = 31 × 51 × 71 × 371
LCM(105,111) = 3885
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Related Least Common Multiples of 111
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