Replication of Quantum Factorisation Records with a VIC-20, an Abacus, and a Dog

Paper 2025/1237
Replication of Quantum Factorisation Records with an 8-bit Home Computer, an Abacus, and a Dog

Peter Gutmann, University of Auckland

Stephan Neuhaus, Zurich University of Applied Sciences

Abstract
This paper presents implementations that match and, where possible, exceed current quantum factorisation records using a VIC-20 8-bit home computer from 1981, an abacus, and a dog. We hope that this work will inspire future efforts to match any further quantum factorisation records, should they arise.

Note: (Minor revisions made to the original to correct a typo, clarify the use of sqrt(n) for factorisation, and add email addresses).

BibTeX

@misc{cryptoeprint:2025/1237,
author = {Peter Gutmann and Stephan Neuhaus},
title = {Replication of Quantum Factorisation Records with an 8-bit Home Computer, an Abacus, and a Dog},
howpublished = {Cryptology {ePrint} Archive, Paper 2025/1237},
year = {2025},
url = {https://eprint.iacr.org/2025/1237}
}