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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) Phi(63) = 36. [McCranie] 63 is the smallest number that can be expressed with 3 identical odd prime digits: 63 = 333 in base 4. [Necula] (63) = 6*3. [Kumar] 63^63220 is the only positive nontitanic prime of form n^n minus the smallest amicable number. [Loungrides]
(There is one curio for this number that has not yet been approved by an editor.)
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