What is the Least Common Multiple of 931 and 938?
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 931 and 938 is 124754.
LCM(931,938) = 124754
Least Common Multiple of 931 and 938 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 931 and 938, than apply into the LCM equation.
GCF(931,938) = 7
LCM(931,938) = ( 931 × 938) / 7
LCM(931,938) = 873278 / 7
LCM(931,938) = 124754
Least Common Multiple (LCM) of 931 and 938 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 931 and 938. First we will calculate the prime factors of 931 and 938.
Prime Factorization of 931
Prime factors of 931 are 7, 19. Prime factorization of 931 in exponential form is:
931 = 72 × 191
Prime Factorization of 938
Prime factors of 938 are 2, 7, 67. Prime factorization of 938 in exponential form is:
938 = 21 × 71 × 671
Now multiplying the highest exponent prime factors to calculate the LCM of 931 and 938.
LCM(931,938) = 72 × 191 × 21 × 671
LCM(931,938) = 124754
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