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What is the Least Common Multiple of 17402 and 17420?

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 17402 and 17420 is 151571420.

LCM(17402,17420) = 151571420

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Least Common Multiple of 17402 and 17420 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 17402 and 17420, than apply into the LCM equation.

GCF(17402,17420) = 2
LCM(17402,17420) = ( 17402 × 17420) / 2
LCM(17402,17420) = 303142840 / 2
LCM(17402,17420) = 151571420

Least Common Multiple (LCM) of 17402 and 17420 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 17402 and 17420. First we will calculate the prime factors of 17402 and 17420.

Prime Factorization of 17402

Prime factors of 17402 are 2, 7, 11, 113. Prime factorization of 17402 in exponential form is:

17402 = 21 × 71 × 111 × 1131

Prime Factorization of 17420

Prime factors of 17420 are 2, 5, 13, 67. Prime factorization of 17420 in exponential form is:

17420 = 22 × 51 × 131 × 671

Now multiplying the highest exponent prime factors to calculate the LCM of 17402 and 17420.

LCM(17402,17420) = 22 × 71 × 111 × 1131 × 51 × 131 × 671
LCM(17402,17420) = 151571420