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 Showing results 1 to 25 of 1000 Search took 0.29 seconds. Search: Posts Made By: Dr Sardonicus
 Forum: Soap Box 2021-05-06, 20:29 Replies: 321 Views: 37,550 Posted By Dr Sardonicus You checked here... You checked here (https://www.mersenneforum.org/showpost.php?p=577800&postcount=316), no doubt.
 Forum: Soap Box 2021-05-06, 13:43 Replies: 321 Views: 37,550 Posted By Dr Sardonicus :missingteeth: :missingteeth: :missingteeth:... :missingteeth: :missingteeth: :missingteeth: :missingteeth: :missingteeth: :missingteeth: :missingteeth: :missingteeth: :missingteeth: :missingteeth: :missingteeth: :missingteeth: :missingteeth:...
 Forum: Lounge 2021-05-06, 12:45 Replies: 219 Views: 35,240 Posted By Dr Sardonicus Rare hummingbird's stop in LaBagh Woods is a... Rare hummingbird's stop in LaBagh Woods is a once-in-a-lifetime sight for Chicago birders...
 Forum: Lounge 2021-05-05, 16:21 Replies: 66 Views: 12,584 Posted By Dr Sardonicus Here's a "topper." Some periodical cicadas spend... Here's a "topper." Some periodical cicadas spend 13 years underground. And 13 is another prime number! Thus,the periods are relatively prime, so a given pair of broods of 17-year and 13-year...
 Forum: Puzzles 2021-05-05, 12:06 Replies: 16 Views: 620 Posted By Dr Sardonicus Should there be a A_0 and A_1 that satisfies this... Should there be a A_0 and A_1 that satisfies this for every k?[/quote]Yes. Using the condition that the pk are distinct, the existence of simultaneous solutions to all the congruences is guaranteed...
 Forum: Lounge 2021-05-05, 12:00 Replies: 66 Views: 12,584 Posted By Dr Sardonicus This may affect storm5510 since he lives in... This may affect storm5510 since he lives in Indiana... Nature at its craziest: Trillions of cicadas about to emerge...
 Forum: Lounge 2021-05-04, 20:52 Replies: 66 Views: 12,584 Posted By Dr Sardonicus When xilman talks, the EU listens... Food of... When xilman talks, the EU listens... Food of the future? EU nations put mealworms on the menu (https://apnews.com/article/europe-worms-science-business-oddities-c12bf770addd95eed248a0deee5e5d95)
 Forum: Lounge 2021-05-04, 19:19 Replies: 40 Views: 2,606 Posted By Dr Sardonicus Long minutes googling turned up the explanation... Long minutes googling turned up the explanation that - it's tradition! Part of the tradition is, the names of the months were generally written out. The Declaration of Independence has the date,...
 Forum: Puzzles 2021-05-04, 12:50 Replies: 16 Views: 620 Posted By Dr Sardonicus The May 2021 Challenge seems quite similar to... The May 2021 Challenge seems quite similar to finding Riesel or Sierpinski numbers by means of "covering sets" of congruences. The misstatement of the subscripts is the kind of oopsadaisy a number...
 Forum: Lounge 2021-05-04, 02:12 Replies: 219 Views: 35,240 Posted By Dr Sardonicus Traveling owl: Man drives hours with bird in... Traveling owl: Man drives hours with bird in truck's grille (https://apnews.com/article/birds-owls-oddities-ec6653cef99156ee11710bb15f8da832)
 Forum: Science & Technology 2021-05-03, 13:56 Replies: 205 Sticky: Poll: COVID vaccination wavefront Views: 10,815 Posted By Dr Sardonicus One quotation, attributed to H. L. Mencken: "No... One quotation, attributed to H. L. Mencken: "No one in the world, so far as I know - and I have searched the records for years, and employed agents to help - has ever lost money by underestimating...
 Forum: Soap Box 2021-05-03, 12:45 Replies: 117 Views: 28,441 Posted By Dr Sardonicus The cause that led Martin Luther King, Jr. to... The cause that led Martin Luther King, Jr. to Memphis, where he was murdered on April 4, 1968, as described in this post (https://www.mersenneforum.org/showpost.php?p=512651&postcount=64), was that...
 Forum: Lounge 2021-04-30, 12:35 Replies: 1,363 Views: 118,295 Posted By Dr Sardonicus Two influencers ordered off Bali after fake mask... Two influencers ordered off Bali after fake mask video prank (https://apnews.com/article/asia-pacific-bali-health-coronavirus-arts-and-entertainment-4ec6747d25b03487956e02651aefd7e4)
 Forum: Homework Help 2021-04-29, 15:35 Replies: 14 Views: 537 Posted By Dr Sardonicus The Archimedean property is that if x and y are... The Archimedean property is that if x and y are in an ordered field, x > 0 and y > 0, there is a positive integer n such that n*x > y. Assuming the ordered field is the field of rational numbers...
 Forum: Data 2021-04-29, 11:14 Replies: 565 Views: 88,405 Posted By Dr Sardonicus A 61 decimal digit factor winkled out. Amazing! ... A 61 decimal digit factor winkled out. Amazing! Whatever the problem was with the PRP cofactor residue, it's been fixed. Two tests show a residue of PRP_PRP_PRP_PRP_ And, as previously...
 Forum: Data 2021-04-29, 00:11 Replies: 565 Views: 88,405 Posted By Dr Sardonicus I'm curious. Usually when a cofactor tests as a... I'm curious. Usually when a cofactor tests as a PRP, the residue is listed as PRP_PRP_PRP_PRP_ But here, although the history says the remaining cofactor is a probable prime, the PRP cofactor...
 Forum: Lounge 2021-04-28, 15:27 Replies: 1,718 Views: 154,867 Posted By Dr Sardonicus Update on previous report The report cited in this post (https://mersenneforum.org/showpost.php?p=568727&postcount=1615) that said Capitol Police Officer Brian Sicknick was hit on the head with a fire extinguisher proved to...
 Forum: Miscellaneous Math 2021-04-27, 13:35 Replies: 19 Views: 548 Posted By Dr Sardonicus So, you took something bad, and deliberately made... So, you took something bad, and deliberately made it worse. Does "this" refer to the websites, your having seen the websites, your compounding of their offenses, or something else? In any case,...
 Forum: Lounge 2021-04-27, 13:15 Replies: 1,370 Views: 88,966 Posted By Dr Sardonicus Hmm, as article mentions, ethylene glycol is... Hmm, as article mentions, ethylene glycol is lethally toxic to dogs and cats. People have intentionally used antifreeze to kill unwanted animal visitors, but it is hideously cruel. Some of its...
 Forum: Miscellaneous Math 2021-04-27, 12:36 Replies: 19 Views: 548 Posted By Dr Sardonicus Even in the Tom Lehrer song, he converts 138 to... Even in the Tom Lehrer song, he converts 138 to 11 decimal to do the subtraction, "7 from 11 is 4." I would do similarly. I would work AD + BE hex in my head as follows: D + E hex = 14 + 13 = 27...
 Forum: Miscellaneous Math 2021-04-26, 16:13 Replies: 19 Views: 548 Posted By Dr Sardonicus Even though I grew up with teaspoons,... Even though I grew up with teaspoons, tablespoons, ounces, cups, pints, gallons, inches, feet, yards, and miles, I did all the arithmetic in decimal. When introduced to metric units, I was...
 Forum: Lounge 2021-04-26, 15:58 Replies: 231 Views: 25,636 Posted By Dr Sardonicus The Chernobyl nuclear reactor 4 went blooey on... The Chernobyl nuclear reactor 4 went blooey on April 26, 1986.
 Forum: Miscellaneous Math 2021-04-26, 15:44 Replies: 19 Views: 548 Posted By Dr Sardonicus Who might actually be routinely having to do... Who might actually be routinely having to do addition and subtraction (not to mention multiplication and division with quotient and remainder) problems to multiple bases by hand escapes me, other...
 Forum: Lounge 2021-04-26, 15:09 Replies: 219 Views: 35,240 Posted By Dr Sardonicus Ah, good. Not geese. Bills are different. Geese... Ah, good. Not geese. Bills are different. Geese have longer necks. The white birds appear to be American Pekin ducks. The other bird appears to be a male Mallard. Pekin...
 2021-04-26, 14:00 Replies: 7 Views: 237 Posted By Dr Sardonicus I'm not certain, but I'm guessing you've got... I'm not certain, but I'm guessing you've got plenty of company.
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