Saturday, 13 June 2015

knowledge - Unlock My Phone! February 2018


I forgot my password again! I changed it a few days ago but already forgot!


What is my phone's password this month?



enter image description here


Hint #1:



My passwords do tend to be fairly long, as mentioned in the comments.



Hint #2:



The number itself may not have been on the moon, but maybe something it shares a trait with.




Answer




Your lock code is



115132219018763992565095597973971522401



The reason



Neil Armstrong was the first man on moon. Armstrong number is an n-digit number in which sum of n-th power of each digit is equal to the number itself. E.g. - 371 = 3^3 + 7^3 + 1^3. (3 digit number so power of 3).



Using this rationale, we find that




115132219018763992565095597973971522401 is the largest known armstrong number as per this and has 39 digits.



No wonder you forgot it!



Bonus reading - wikipedia



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