English

Strong pseudoprimes to the first 9 prime bases

Number Theory 2012-07-03 v1

Abstract

Define ψm\psi_m to be the smallest strong pseudoprime to the first mm prime bases. The exact value of ψm\psi_m is known for 1m81\le m \le 8. Z. Zhang have found a 19-decimal-digit number Q11=3825123056546413051Q_{11}=3825\,12305\,65464\,13051 which is a strong pseudoprime to the first 11 prime bases and he conjectured that ψ9=ψ10=ψ11=Q11.\psi_9=\psi_{10}=\psi_{11}=Q_{11}. We prove the conjecture by algorithms.

Keywords

Cite

@article{arxiv.1207.0063,
  title  = {Strong pseudoprimes to the first 9 prime bases},
  author = {Yupeng Jiang and Yingpu Deng},
  journal= {arXiv preprint arXiv:1207.0063},
  year   = {2012}
}

Comments

12pages

R2 v1 2026-06-21T21:28:27.854Z