Pseudoprimes and Other Research

Items related to Jon Grantham's mathematical research.

Thursday, July 31, 2025

Publication of "No New Goormaghtigh Primes up to 10^700"

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  My paper, "No New Goormaghtigh Primes up to 10 700 " appeared in Integers last year. This was a super-fun paper to write. I had...
Wednesday, July 30, 2025

Publication of "Fibonacci primes, primes of the form 2^n-k and beyond"

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  Last year, my paper with Andrew Granville, "Fibonacci primes, primes of the form 2^n-k and beyond" appeared in the Journal of Nu...
Tuesday, July 29, 2025

Publication of "Ternary and quaternary curves of small fixed genus and gonality with many rational points" in Experimental Mathematics

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I haven't kept up this blog in a couple of years, and I've had a few articles appear since then. Let's try to get caught up. My ...
Friday, May 19, 2023

Publication of "Finding a widely digitally delicate prime" in Integers

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  My paper "Finding a widely digitally delicate prime" appeared in the journal Integers  earlier this year.
Monday, March 13, 2023

Publication of "On Integers Whose Sum Is the Reverse of Their Product" in Fibonacci Quarterly

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  My paper with Xander Faber, "On Integers Whose Sum Is the Reverse of Their Product" has appeared in the latest issue of Fibonacc...
Monday, August 01, 2022

Preprint of "On the Maximum Gonality of a Curve over a Finite Field" on the math arXiv

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  A preprint of my paper with Xander Faber and Everett Howe, " On the Maximum Gonality of a Curve over a Finite Field"   has appea...
Sunday, July 24, 2022

"Binary curves of small fixed genus and gonality with many rational points" appears in Journal of Algebra

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  My paper with Xander Faber, "Binary curves of small fixed genus and gonality with many rational points" appeared in the 1 May 20...
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