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Question Number 128246 by mnjuly1970 last updated on 05/Jan/21

              ...nice  calculus...    suppose that  :: m=((4^p −1)/3) ,  where         p  is  a prime number and  p>3.  prove  that  :::                  2^(m−1)  ≡^m  1    ...?

$$\:\:\:\:\:\:\:\:\:\:\:\:\:\:...{nice}\:\:{calculus}... \\ $$ $$\:\:{suppose}\:{that}\:\:::\:{m}=\frac{\mathrm{4}^{{p}} −\mathrm{1}}{\mathrm{3}}\:,\:\:{where} \\ $$ $$\:\:\:\:\:\:\:{p}\:\:{is}\:\:{a}\:{prime}\:{number}\:{and}\:\:{p}>\mathrm{3}. \\ $$ $${prove}\:\:{that}\:\:::: \\ $$ $$\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\mathrm{2}^{{m}−\mathrm{1}} \:\overset{{m}} {\equiv}\:\mathrm{1}\:\:\:\:...? \\ $$ $$\: \\ $$

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