JP Journal of Algebra, Number Theory and Applications

The JP Journal of Algebra, Number Theory and Applications is a prestigious international journal indexed in the Emerging Sources Citation Index (ESCI). It publishes original research papers, both theoretical and applied in nature, in various branches of algebra and number theory. The journal also welcomes survey articles that contribute to the advancement of these fields.

Submit Article

NOTE ON THE CLASS NUMBER OF IMAGINARY QUADRATIC NUMBER FIELDS AND SOPHIE GERMAIN PRIMES

Authors

  • Anly Li

Keywords:

class number, Sophie Germain prime.

DOI:

https://doi.org/10.17654/0972555523027

Abstract

Let $p>2$ be a Sophie Germain prime which means that $q=2 p+1$ is also a prime. Let $K=\mathbb{Q}(\sqrt{-q})$ and denote its ideal class number by $h_K$. We use Kummer congruences and Bernoulli numbers to study the relation between $p$ and $h_K$. We prove that $-h_K \equiv k \cdot p(\bmod q)$ for some positive integer $k$.

Received: August 29, 2023
Accepted: October 7, 2023

References

Kenneth F. Ireland and Michael I. Rosen, A Classical Introduction to Modern Number Theory, Springer, 1990.

Paulo Ribenboim, 13 Lectures on Fermat’s Last Theorem, Springer-Verlag, New York, 1979.

Tom Lovering, Cyclotomic fields and Fermat’s last theorem.

https://tlovering.files.wordpress.com/2015/02/cyclotomic-fields-and-flt9.pdf.

Published

2023-11-06

Issue

Section

Articles

How to Cite

NOTE ON THE CLASS NUMBER OF IMAGINARY QUADRATIC NUMBER FIELDS AND SOPHIE GERMAIN PRIMES. (2023). JP Journal of Algebra, Number Theory and Applications, 62(2), 159-165. https://doi.org/10.17654/0972555523027

Similar Articles

1-10 of 83

You may also start an advanced similarity search for this article.