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%I #10 Apr 03 2023 10:36:12
%S 5,8,1,5,4,5,9,9,8,8,7,2,2,3,2,8,2,9,4,0,7
%N Decimal expansion of the only positive real solution to x^2/2! - x^3/3! + x^5/5! - x^7/7! + x^11/11! - ... = 0, using the prime numbers (2, 3, 5, 7 ...)
%C The constant is 5. 8154599887 2232829407 3007970995 6593490083 3301145...
%H Michael Hartley, <a href="https://t5k.org/curios/page.php?curio_id=5286">5.8154...</a>, Prime curios
%Y Cf. A078756, A084257
%K cons,nonn
%O 1,1
%A _Kausthub Gudipati_, Aug 03 2011