This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A371847 #14 Apr 16 2024 23:37:44 %S A371847 5,3,6,9,2,7,9,9,5,5,0,2,7,5,6,3,2,1,5,2,2,3,3,8,2,7,7,9,9,2,9,4,5,3, %T A371847 0,0,6,1,1,0,2,0,9,9,4,0,4,2,1,2,4,0,0,5,9,1,5,6,7,8,6,3,9,4,4,3,3,5, %U A371847 3,4,6,2,9,8,2,1,0,3,4,7,9,8,9,6,4,3,9,5,5,5 %N A371847 Decimal expansion of 2^86243 - 1, the 28th Mersenne prime. %C A371847 This prime has 25962 decimal digits and was discovered by David Slowinski in 1982. %H A371847 Paolo Xausa, <a href="/A371847/b371847.txt">Table of n, a(n) for n = 25962..51923</a> %H A371847 GIMPS, <a href="https://www.mersenne.org/primes/">List of Known Mersenne Prime Numbers</a>. %H A371847 OEIS Wiki, <a href="/wiki/Mersenne_primes">Mersenne primes</a> (with a list of similar sequences). %H A371847 Wikipedia, <a href="http://en.wikipedia.org/wiki/Mersenne_prime">Mersenne prime</a>. %e A371847 53692799550275632152233827799294530061102099404212... %t A371847 IntegerDigits[2^86243 - 1][[;;100]] %Y A371847 Cf. A000043 (exponents), A000668, A028335 (lengths). %Y A371847 Cf. decimal expansion of Mersenne primes: see OEIS Wiki link. %K A371847 nonn,cons,fini,full %O A371847 25962,1 %A A371847 _Paolo Xausa_, Apr 09 2024