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What is the Least Common Multiple of 26401 and 26420?

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 26401 and 26420 is 697514420.

LCM(26401,26420) = 697514420

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Least Common Multiple of 26401 and 26420 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 26401 and 26420, than apply into the LCM equation.

GCF(26401,26420) = 1
LCM(26401,26420) = ( 26401 × 26420) / 1
LCM(26401,26420) = 697514420 / 1
LCM(26401,26420) = 697514420

Least Common Multiple (LCM) of 26401 and 26420 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 26401 and 26420. First we will calculate the prime factors of 26401 and 26420.

Prime Factorization of 26401

Prime factors of 26401 are 17, 1553. Prime factorization of 26401 in exponential form is:

26401 = 171 × 15531

Prime Factorization of 26420

Prime factors of 26420 are 2, 5, 1321. Prime factorization of 26420 in exponential form is:

26420 = 22 × 51 × 13211

Now multiplying the highest exponent prime factors to calculate the LCM of 26401 and 26420.

LCM(26401,26420) = 171 × 15531 × 22 × 51 × 13211
LCM(26401,26420) = 697514420