4,294,967,297
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Number
$4 \, 294 \, 967 \, 297$ is:
- $641 \times 6 \, 700 \, 417$
- The $6$th Fermat number after $3$, $5$, $17$, $257$, $65 \, 537$:
- $4 \, 294 \, 967 \, 297 = 2^{\paren {2^5} } + 1 = 2^{32} + 1$
- and the $1$st not to be prime.
Also see
- Previous ... Next: Fermat Number
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $257$
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $4,294,967,297$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $257$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $4,294,967,297$