
LetEbe an elliptic curve overQwith complex multiplication by an order in an imaginary quadratic field. Letψn{\psi _n}denote thenth division polynomial, and letPbe a rational point ofEof infinite order. A natural numbernis called anelliptic pseudoprimeifn|ψn+1(P)n|{\psi _{n + 1}}(P)andnis composite. LetN(x)N(x)denote the number of elliptic pseudoprimes up tox. We show thatN(x)≪x(loglogx)7/2/(logx)3/2N(x) \ll x{(\log \log x)^{7/2}}/{(\log x)^{3/2}}. More generally, ifP1,…,Pr{P_1}, \ldots ,{P_r}arerindependent rational points ofEwhich have infinite order, andΓ\Gammais the subgroup generated by them, denote byNΓ(x){N_\Gamma }(x)the number of compositen≤xn \leq xsatisfyingn|ψn+1(Pi)n|{\psi _{n + 1}}({P_i}),1≤i≤r1 \leq i \leq r. Forr≥2r \geq 2, we proveNΓ(x)≪xexp(−c(logx)(loglogx)){N_\Gamma }(x) \ll x\exp ( - c\sqrt {(\log x)(\log \log x))}for some positive constantc.
Quadratic extensions, Generalized primes and integers, primality testing, elliptic pseudoprimes, Arithmetic ground fields for curves, Algebraic theory of abelian varieties
Quadratic extensions, Generalized primes and integers, primality testing, elliptic pseudoprimes, Arithmetic ground fields for curves, Algebraic theory of abelian varieties
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