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What is the Least Common Multiple of 1331 and 1342?

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 1331 and 1342 is 162382.

LCM(1331,1342) = 162382

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Least Common Multiple of 1331 and 1342 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1331 and 1342, than apply into the LCM equation.

GCF(1331,1342) = 11
LCM(1331,1342) = ( 1331 × 1342) / 11
LCM(1331,1342) = 1786202 / 11
LCM(1331,1342) = 162382

Least Common Multiple (LCM) of 1331 and 1342 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1331 and 1342. First we will calculate the prime factors of 1331 and 1342.

Prime Factorization of 1331

Prime factors of 1331 are 11. Prime factorization of 1331 in exponential form is:

1331 = 113

Prime Factorization of 1342

Prime factors of 1342 are 2, 11, 61. Prime factorization of 1342 in exponential form is:

1342 = 21 × 111 × 611

Now multiplying the highest exponent prime factors to calculate the LCM of 1331 and 1342.

LCM(1331,1342) = 113 × 21 × 611
LCM(1331,1342) = 162382