Race between primes of the forms 4k + 1 and 4k + 3

32 · John Cook · Feb. 15, 2026, 7:42 p.m.
Math Number theory Number theory primes mathematics algorithms
Summary
The blog discusses the characterization of odd primes in terms of their ability to be expressed as the sum of two squares, focusing on primes of the forms 4k + 1 and 4k + 3. Previous algorithms and a specific example are referenced to illustrate these concepts. The author is John D. Cook.
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