Prove the number theory conjecture

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SUMMARY

The conjecture states that for any positive integer n, the expression n² - n + 41 yields a prime number. Participants in the discussion highlighted that this expression does not factor easily, unlike n² - 1. A key insight was that for certain values of n, specifically n = 41, the expression simplifies to 41, which is prime. However, for n = 42, the expression evaluates to 43, which is also prime, but further exploration reveals that larger values of n eventually yield composite numbers, disproving the conjecture.

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yeland404
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Homework Statement



prove or disprove the following conjecture:

If n is a positive integar, then n^2 - n +41 is a prime number

Homework Equations



no, just prove or disprove

The Attempt at a Solution



I think one possible answer may be there is no factorization for this except itself and 1.
not like N^2-1 which can write as (n-1)(n+1)
 
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Isn't there some value of n for which it's clearly not prime? Maybe n^2 - n +41 divisible by 41?
 
Last edited:
If you think carefully plug in a value for which might be staring at you... and factor...
 

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