How to perform antilog? If I have e^026..how to calculate e?

I don't know what kind of calculator you're using.......most scientific models have an "e^x" key.......or some such thing

If you go to our onsite calculator, you can just hit the "e" button, then the  x^y key, then key in .026 and hit the " = " key

Hope this helps........

$${{\mathtt{e}}}^{{\mathtt{26}}} = {\mathtt{195\,729\,609\,428.838\: \!764\: \!269\: \!776\: \!397\: \!9}}$$

$$\\(e^{26})^{1/26} = 195729609428.8387642697763979^{1/26}\\\\
e= 195729609428.8387642697763979^{1/26}\\\\$$

e=    $${{\mathtt{195\,729\,609\,428.838\: \!764\: \!269\: \!776\: \!397\: \!9}}}^{\left({\frac{{\mathtt{1}}}{{\mathtt{26}}}}\right)} = {\mathtt{2.718\: \!281\: \!828\: \!459\: \!045\: \!5}}$$