The book is now available! 155
(another Prime Pages' Curiosity)
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+ 22 + 3! + 5! + 72 - 11 - 13 = 155. [Russ]

+ 155 is the only three-digit number such that 155^155-155+1 is prime. [Opao]

+ The sum of primes between smallest and largest prime factor of itself. [Post]

+ 155 = prime(1+5+5) * pi(1+5+5). It is the smallest number of this form. [Bajpai]




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