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math.NT2021★ 1 cited
Dedekind on Higher Congruences and Index Divisors, 1871 and 1878
Fernando Q. Gouvêa, Jonathan Webster
Dedekind's theorem connecting ideal theory and polynomial congruences appears in all textbooks on algebraic number theory, but few books note its connection to the problem of ``com…
math.NT2018
Fast tabulation of challenge pseudoprimes
Andrew Shallue, Jonathan Webster
We provide a new algorithm for tabulating composite numbers which are pseudoprimes to both a Fermat test and a Lucas test. Our algorithm is optimized for parameter choices that min…