The book is now available! 139968
(just those submitted by Firoozbakht)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

Just showing those entries submitted by 'Firoozbakht': (Click here to show all)

+ 139968 = phi((1*3*9*9*6*8)*(1+3+9+9+6+8)) = (1*3*9*9*6*8) * phi(1+3+9+9+6+8) = (1+3+9+9+6+8) * phi(1*3*9*9*6*8). [Firoozbakht]




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