What is the Least Common Multiple of 740 and 748?
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 740 and 748 is 138380.
LCM(740,748) = 138380
Least Common Multiple of 740 and 748 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 740 and 748, than apply into the LCM equation.
GCF(740,748) = 4
LCM(740,748) = ( 740 × 748) / 4
LCM(740,748) = 553520 / 4
LCM(740,748) = 138380
Least Common Multiple (LCM) of 740 and 748 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 740 and 748. First we will calculate the prime factors of 740 and 748.
Prime Factorization of 740
Prime factors of 740 are 2, 5, 37. Prime factorization of 740 in exponential form is:
740 = 22 × 51 × 371
Prime Factorization of 748
Prime factors of 748 are 2, 11, 17. Prime factorization of 748 in exponential form is:
748 = 22 × 111 × 171
Now multiplying the highest exponent prime factors to calculate the LCM of 740 and 748.
LCM(740,748) = 22 × 51 × 371 × 111 × 171
LCM(740,748) = 138380
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