Septillion

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More things to try:

• septillion
• 1/2 + 1/4 + 1/8 + 1/16 + ...
• expand (x^2 + 1)(x^2 - 1)(x+1)^3

Cite this as:

Weisstein, Eric W. "Septillion." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/Septillion.html

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