The book is now available! 26833
(another Prime Pages' Curiosity)
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+ pi(x; 4k+3) is greater than or equal to pi(x; 4k+1) for all primes x < 26833. "Chebyshev's bias" is the phenomenon that most of the time, there are more primes of the form 4k+3 than of the form 4k+1, up to the same limit.

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