By Jeff Harding

I am holding in my ink-stained hands a Zimbabwean $100 trillion banknote (100,000,000,000,000, or 1014), the largest ever denomination banknote with the zeros printed out. The largest denomination ever was the 1946 100 quadrillion pengo from Hungary (100,000,000,000,000,000,000, or 1020). My Zimbabwean note cost me US$7.50 on eBay.

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