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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) The number 3467 and its reversal are the only fourdigit lefttruncatable emirps with lefttruncatable reversal. [Punches] The smallest emirp containing all distinct digits n for which n!1 is a factorial prime. [Loungrides] The smallest distinctdigit 4digit emirp whose the complementary digits create its emirp, i.e., 7643. Is there another such prime? [Loungrides]
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