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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) 12291*2^1428571 is prime. Note that 12291 written in base4 is palindromic (3000003). Also, if you sum the factorials of the digits of 12291*2^1428571 you get the prime 1767235343. [Earls]
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