What is the Least Common Multiple of 745 and 755?
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 745 and 755 is 112495.
LCM(745,755) = 112495
Least Common Multiple of 745 and 755 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 745 and 755, than apply into the LCM equation.
GCF(745,755) = 5
LCM(745,755) = ( 745 × 755) / 5
LCM(745,755) = 562475 / 5
LCM(745,755) = 112495
Least Common Multiple (LCM) of 745 and 755 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 745 and 755. First we will calculate the prime factors of 745 and 755.
Prime Factorization of 745
Prime factors of 745 are 5, 149. Prime factorization of 745 in exponential form is:
745 = 51 × 1491
Prime Factorization of 755
Prime factors of 755 are 5, 151. Prime factorization of 755 in exponential form is:
755 = 51 × 1511
Now multiplying the highest exponent prime factors to calculate the LCM of 745 and 755.
LCM(745,755) = 51 × 1491 × 1511
LCM(745,755) = 112495
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