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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) 1321 is an emirp and ((1321!)/(1231!))1231 is prime. [Patterson] (1321) = 1^{3} * 3^{3} * 2^{3} * 1^{3}. [Caldwell] The smallest emirp that splits up into two consecutive Fibonacci numbers: 13, 21. Note that the digits consist of the first four nonzero Fibonacci numbers. [Beedassy] A prime formed from first Fiboncacci numbers that can be expressed by first semiprimes raised to first primes: 4^5+6^3+9^2. [Silva]
(There are 3 curios for this number that have not yet been approved by an editor.) To link to this page use /curios/page.php?number_id=386
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