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What is the Least Common Multiple of 7921 and 7930?

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 7921 and 7930 is 62813530.

LCM(7921,7930) = 62813530

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Least Common Multiple of 7921 and 7930 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7921 and 7930, than apply into the LCM equation.

GCF(7921,7930) = 1
LCM(7921,7930) = ( 7921 × 7930) / 1
LCM(7921,7930) = 62813530 / 1
LCM(7921,7930) = 62813530

Least Common Multiple (LCM) of 7921 and 7930 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7921 and 7930. First we will calculate the prime factors of 7921 and 7930.

Prime Factorization of 7921

Prime factors of 7921 are 89. Prime factorization of 7921 in exponential form is:

7921 = 892

Prime Factorization of 7930

Prime factors of 7930 are 2, 5, 13, 61. Prime factorization of 7930 in exponential form is:

7930 = 21 × 51 × 131 × 611

Now multiplying the highest exponent prime factors to calculate the LCM of 7921 and 7930.

LCM(7921,7930) = 892 × 21 × 51 × 131 × 611
LCM(7921,7930) = 62813530