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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) 166 is the smallest number such that the number and its reversal are both congruent to 1 mod p for the same set of some three distinct odd primes (166 = 661 = 1 mod (3, 5, 11)). [Thoms] 166!1 is a factorial minus one prime. [Dobb] The smallest Smith number that is prime when reversed (661), turned upside down (991), and reversedthenturned upside down (199). You get the next case by inserting a zero between the digits (10606). [Capelle]
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