Prime Decomposition of 7th Fermat Number/Historical Note
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Historical Note on Prime Decomposition of 7th Fermat Number
In $1909$, James Caddall Morehead and Alfred E. Western reported in Bulletin of the American Mathematical Society that they had proved that $F_7$ and $F_8$ are not prime, but without having established what the prime factors are.
- 1909: J.C. Morehead and A.E. Western: Note on Fermat's numbers (Bull. Amer. Math. Soc. Vol. 18: pp. 1 – 6)
- 1971: Michael A. Morrison and John Brillhart: The factorization of $F_7$ (Bull. Amer. Math. Soc. Vol. 77: p. 264)