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Mathematics of Computation

Published by the American Mathematical Society since 1960 (published as Mathematical Tables and other Aids to Computation 1943-1959), Mathematics of Computation is devoted to research articles of the highest quality in computational mathematics.

ISSN 1088-6842 (online) ISSN 0025-5718 (print)

The 2020 MCQ for Mathematics of Computation is 1.78.

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On the number of elliptic pseudoprimes
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by Daniel M. Gordon PDF
Math. Comp. 52 (1989), 231-245 Request permission

Abstract:

For an elliptic curve E with complex multiplication by an order in $K = {\mathbf {Q}}(\sqrt { - d} )$, a point P of infinite order on E, and any prime p with $( - d|p) = - 1$, we have that $(p + 1) \cdot P = O\pmod p$, where O is the point at infinity and calculations are done using the addition law for E. Any composite number which satisfies these conditions is called an elliptic pseudoprime. In this paper it is shown that, assuming the Generalized Riemann Hypothesis, elliptic pseudoprimes are less numerous than primes. In particular, on the GRH, the number of elliptic pseudoprimes less than x is $O(x\log \log x/{\log ^2}x)$. For certain curves it is shown that infinitely many elliptic pseudoprimes exist.
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Additional Information
  • © Copyright 1989 American Mathematical Society
  • Journal: Math. Comp. 52 (1989), 231-245
  • MSC: Primary 11Y11; Secondary 11G05
  • DOI: https://doi.org/10.1090/S0025-5718-1989-0946604-2
  • MathSciNet review: 946604