Prime Decomposition of 7th Fermat Number/Mistake
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Source Work
1986: David Wells: Curious and Interesting Numbers:
- The Dictionary
- $257$
1997: David Wells: Curious and Interesting Numbers (2nd ed.):
- The Dictionary
- $257$
Mistake
- Thus, in $1909$, Moorhead and Western proved that $F_7$ and $F_8$ are composite, without producing any factors.
Correction
It is not Moorhead, but James Caddall Morehead.
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $257$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $257$