Are you sure that you know Prime Factorisation?

Number Theory Level 4

Find the sum of the distinct prime factors of the number 99899.

Solve this problem without using any calculator!


The answer is 636.

Puneet Pinku by Puneet Pinku , 20, India

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1 solution

Puneet Pinku
Mar 25, 2016

The sum of the two numbers is clearly 353 + 283 = 636 353+283=636 .

2 Helpful 0 Interesting 0 Brilliant 0 Confused

Solvers are also requested to write the solution on brilliant if they have any other method of solving it.

Puneet Pinku - 5 years, 2 months ago

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Hey !!!! brilliant method......but i think it is a more simple way to express it as a difference of two squares and then applying identity.

Mohit Gupta - 5 years, 2 months ago

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But how are we supposed to pick such two numbers at random from such a vast collection of numbers...

Puneet Pinku - 5 years, 2 months ago

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