About >> Extra

I'm an introvert (See MBTI#Criticism).

Rey, rsapkf, and variants are my pseudonyms. My legal name is not very difficult to find if you search hard enough but I don't think it's terribly important to share it here.


  • (largest number that is the sum of the digits of its cube) point 766667,
  • (largest n for which 1^2+2^2+3^2+ ... +n^2 = 1+2+3+ ... +m has a solution) point 266667

What's Special About This Number?


\int_{0}^{\pi} \ -1.57411e^x cosx \, dx

Symbolab Solver

Last Updated: December 17, 2019