This article answers two tough questions:

Without a calculator, and without multiplying it out, conventionally, what is $106^{2}$?

and

What is the largest prime factor of $2^{12}-1$?

Have a look at the tricks right HERE.

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This article answers two tough questions:

Without a calculator, and without multiplying it out, conventionally, what is $106^{2}$?

and

What is the largest prime factor of $2^{12}-1$?

Have a look at the tricks right HERE.