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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) The five 2 or 3digit strings contained in 1373 are prime. It is the smallest 4digit prime with this property. [Mix] The smallest prime formed by concatenating two doubledigit emirps (13, 73). Note that 3137, formed from their reversals, is also prime. [Loungrides] The smallest prime formed by inserting an emirp between the digits of another emirp. [Loungrides]
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