## Problem of the Day #50: Number of Divisors of Large Numbers
*May 8, 2011*

*Posted by Albert in : potd , trackback*

How many divisors of $(289^{90} – 16^{45})$ have only $3$ and $5$ as factors?

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## Problem of the Day #50: Number of Divisors of Large Numbers
*May 8, 2011*

*Posted by Albert in : potd , trackback
*

How many divisors of $(289^{90} – 16^{45})$ have only $3$ and $5$ as factors?

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