preprint Lennart Van Hirtum author Patrick De Causmaecker author Jens Goemaere author Tobias Kenter author 3145 Heinrich Riebler author 8961 Michael Lass author 241350000-0002-5708-7632 Christian Plessl author 161530000-0001-5728-9982 27 department 518 department PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing project This preprint makes the claim of having computed the $9^{th}$ Dedekind Number. This was done by building an efficient FPGA Accelerator for the core operation of the process, and parallelizing it on the Noctua 2 Supercluster at Paderborn University. The resulting value is 286386577668298411128469151667598498812366. This value can be verified in two steps. We have made the data file containing the 490M results available, each of which can be verified separately on CPU, and the whole file sums to our proposed value. 2023 eng 2304.03039 @article{Van Hirtum_De Causmaecker_Goemaere_Kenter_Riebler_Lass_Plessl_2023, title={A computation of D(9) using FPGA Supercomputing}, journal={arXiv:2304.03039}, author={Van Hirtum, Lennart and De Causmaecker, Patrick and Goemaere, Jens and Kenter, Tobias and Riebler, Heinrich and Lass, Michael and Plessl, Christian}, year={2023} } L. Van Hirtum, P. De Causmaecker, J. Goemaere, T. Kenter, H. Riebler, M. Lass, C. Plessl, ArXiv:2304.03039 (2023). Van Hirtum, Lennart, et al. “A Computation of D(9) Using FPGA Supercomputing.” <i>ArXiv:2304.03039</i>, 2023. Van Hirtum, L., De Causmaecker, P., Goemaere, J., Kenter, T., Riebler, H., Lass, M., &#38; Plessl, C. (2023). A computation of D(9) using FPGA Supercomputing. In <i>arXiv:2304.03039</i>. L. Van Hirtum <i>et al.</i>, “A computation of D(9) using FPGA Supercomputing,” <i>arXiv:2304.03039</i>. 2023. Van Hirtum, Lennart, Patrick De Causmaecker, Jens Goemaere, Tobias Kenter, Heinrich Riebler, Michael Lass, and Christian Plessl. “A Computation of D(9) Using FPGA Supercomputing.” <i>ArXiv:2304.03039</i>, 2023. Van Hirtum L, De Causmaecker P, Goemaere J, et al. A computation of D(9) using FPGA Supercomputing. <i>arXiv:230403039</i>. Published online 2023. 434392023-04-08T11:05:29Z2024-01-22T09:56:42Z