823187046383122896921216104846546948319792790320515076726732119163218284371172 036046713301772401534216569368578887782115998981797541546286000230716000159982 248277212628384883047943066328546836223944311977655842794918993522521563237555 650145286211059365868171399984063710196404159462648235183782162356589166387664 599049458627927377620486160161495004228978098646407047162007645445619312738742 470000474 ----------------------------------------------------------------------------- The Lehmer constant to 1000 digits. .59263271820163619710407860499570146908427540719716107109956260815824735236416 000851066478429710125705118718346542386963492602972067606827856079871979437487 251403403000583692486915538640614660348566823412154845636446642830937804980068 991183184965696172012113759470623436986514577152028677342172295805168234444776 889445080541632061558512323623064379170223520781603669639276342712524885456742 628397234194861141555441118656607347923877980434663425531692753922997364863485 871218333767125332765552976528666126066185788713622949403089031984313907958405 478989509947007489250053656329690017664408563598385209478301821868952137848984 967705787356537385497593520672298603936207528576177510978795686629351912784453 933568454874614667993688671835743937379165908437616570415794750776200309560115 740427603024939939214964193674171720654296953903175526951535843439567271915190 168880981717597249067581873559990538542690575895690162307174847972701860908496 99968957675960828498381969270404195036511309800972643309599823665 ----------------------------------------------------------------------------- Lemniscate constant or Gauss constant. also known under this formula. 1/2*Pi^(3/2)/GAMMA(3/4)^2*2^(1/2); also known under the same number divided by sqrt(2)--> 1.854... see D.H. Lehmer The Lemniscate Constant : MTAC (or now MOC) vol 3. pp 550-551 (1948-49). or Abramowitz and Stegun, Handbook of Mathematical Functions, p 658 formula 18.14.7 Dover Publication, New York 1964. 2.6220575542921198104648395898911194136827549514316231628168217038007905870704 142502302955329614290934461357526717832180556089569013939356947011194347752358 404226414971649069519368999799321460723831213908102062218974296008565545397723 05369549710288888325525 ----------------------------------------------------------------------------- The Lengyel constant. 1.09868580552518701 ----------------------------------------------------------------------------- The Levy constant.