The book is now available! 13931213
(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)

+ 13931213 = prime(prime(1+3+9+3+1+2+1+3)) * prime(prime(1*3*9*3*1*2*1*3)). It is the only known number with this property. [Firoozbakht]




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