Abstract
A machine computation has been carried out to show that the twenty-second Fermat numberF 22=\(2^{2^{22} } \)+1 is composite.
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This work was done at the Brazilian Supercomputing Center (CESUP) operated by Universidade Federal do Rio Grande do Sul. The authors were partially supported by CNPq.
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Trevisan, V., Carvalho, J.B. The composite character of the twenty-second Fermat number. J Supercomput 9, 179–182 (1995). https://doi.org/10.1007/BF01245403
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DOI: https://doi.org/10.1007/BF01245403