What is the Least Common Multiple of 961 and 978?
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 961 and 978 is 939858.
LCM(961,978) = 939858
Least Common Multiple of 961 and 978 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 961 and 978, than apply into the LCM equation.
GCF(961,978) = 1
LCM(961,978) = ( 961 × 978) / 1
LCM(961,978) = 939858 / 1
LCM(961,978) = 939858
Least Common Multiple (LCM) of 961 and 978 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 961 and 978. First we will calculate the prime factors of 961 and 978.
Prime Factorization of 961
Prime factors of 961 are 31. Prime factorization of 961 in exponential form is:
961 = 312
Prime Factorization of 978
Prime factors of 978 are 2, 3, 163. Prime factorization of 978 in exponential form is:
978 = 21 × 31 × 1631
Now multiplying the highest exponent prime factors to calculate the LCM of 961 and 978.
LCM(961,978) = 312 × 21 × 31 × 1631
LCM(961,978) = 939858
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