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 A167526 #9 Jul 02 2024 04:16:39 %S A167526 2,7,73,293339 %N A167526 Prime factors of the speed of light in a vacuum, c = 299792458 (m/s). %C A167526 Note that each prime factor of 299792458 appears with multiplicity 1 in this number. %C A167526 Giving the speed of light in km/s or cm/s would yield the same prime factors > 5. If time is measured in hours, or distance in miles, feet, inches or similar, then the numerical value of c is no longer an integer. %F A167526 299792458 = 2 * 7 * 73 * 293339. %t A167526 FactorInteger[299792458][[All, 1]] (* _Paolo Xausa_, Jul 02 2024 *) %o A167526 (PARI) factor(299 792 458)~[1,] %Y A167526 Cf. A003678 (speed of light), A132997 (all divisors of c, contains this as subsequence). %K A167526 fini,full,nonn %O A167526 1,1 %A A167526 _M. F. Hasler_, Nov 18 2009