I like your test suite. Using large X forces a better solution.
Thank you Jonathan. I have discovered this philosophy thanks to James and @bmtran problems.
is there any mathematical algorithm that i dont know about to calculate such big range(10^13)?
i minimized my code as best as i can.still fails for such large number.
The Goldbach Conjecture
Better bullseye matrix
Who invented zero?
Getting the indices from a matrice
Numbers spiral diagonals (Part 1)
Narcissistic number ?
Expression or variable?
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