mersenneforum.org Search Results
 Register FAQ Search Today's Posts Mark Forums Read

 Showing results 1 to 25 of 1000 Search took 0.25 seconds. Search: Posts Made By: Dr Sardonicus
 2021-06-10, 12:43 Replies: 4 Views: 208 Posted By Dr Sardonicus As already observed, taking a^2 and b^2 congruent... As already observed, taking a^2 and b^2 congruent to 0 and 1 (mod f) is always a solution. Thus [0, 1] or [0, f-1] always work. If f has more than one prime factor, there will be other solutions...
 Forum: Lounge 2021-06-10, 12:03 Replies: 225 Views: 39,316 Posted By Dr Sardonicus Perhaps the birds are just cleaning up after the... Perhaps the birds are just cleaning up after the messy squirrels...
 Forum: Lounge 2021-06-09, 14:39 Replies: 1,733 Views: 163,740 Posted By Dr Sardonicus Martha White... Martha White (https://apnews.com/article/louisiana-boycotts-2e8c4355a86f83bc65ec8fd963bcc017)
 2021-06-08, 11:48 Replies: 4 Views: 176 Posted By Dr Sardonicus I see the OP has answered graciously. :tu: I... I see the OP has answered graciously. :tu: I would have been tempted to answer "Yes." :wink: I point out If the attached file was supposed to prove that 10^n + 7 is composite for all other n,...
 Forum: Lounge 2021-06-06, 12:47 Replies: 236 Views: 28,093 Posted By Dr Sardonicus As some may know, Operation Overlord (better... As some may know, Operation Overlord (better known as D-Day), commenced on June 6, 1944. One indication of Dwight Eisenhower's view of leadership was that he anticipated the possibility that the...
 2021-06-04, 14:08 Replies: 1 Views: 123 Posted By Dr Sardonicus (n^2 - b*n)/(2*n+k-b) may be rewritten as ... (n^2 - b*n)/(2*n+k-b) may be rewritten as n/2 - (b+k)/4 + (k^2 - b^2)/(8*n+4*k-4*b) The only way to make the expression a fraction whose denominator remains bounded as n increases without...
 Forum: Hobbies 2021-06-04, 13:36 Replies: 111 Views: 32,880 Posted By Dr Sardonicus Those pictures are informative. I'm guessing... Those pictures are informative. I'm guessing those little ponds by the foundation are where plants were dug out. I don't know how long those ponds persist, but if it's more than a week you...
 Forum: Information & Answers 2021-06-04, 13:24 Replies: 34 Views: 1,068 Posted By Dr Sardonicus Congratulations on finding a factor! ... Congratulations on finding a factor! According to the detailed status report for exponent 168713323 (https://www.mersenne.org/report_exponent/?exp_lo=168713323&exp_hi=&full=1), TF was working the...
 Forum: Lounge 2021-06-04, 12:56 Replies: 1,733 Views: 163,740 Posted By Dr Sardonicus F. Lee Bailey... F. Lee Bailey (https://www.cnn.com/2021/06/03/us/f-lee-bailey-lawyer-dies/index.html)
 Forum: Lounge 2021-06-04, 12:51 Replies: 4,317 Views: 338,075 Posted By Dr Sardonicus They've tried. It's really, really iffy. It... They've tried. It's really, really iffy. It tends to rot.
 Forum: Miscellaneous Math 2021-06-03, 13:53 Replies: 30 Views: 937 Posted By Dr Sardonicus Using Nick's excellent presentation (linked to... Using Nick's excellent presentation (linked to above), the interested reader will have no trouble showing that for each positive integer n, in base ten there are exactly two n-digit idempotents...
 Forum: Puzzles 2021-06-02, 23:39 Replies: 20 Views: 900 Posted By Dr Sardonicus It's not clear to me what is allowed. Apparently... It's not clear to me what is allowed. Apparently you are allowed to switch pairs, and keep track of which pairs you've switched. Given n envelopes and n letters, a given pairing-up of letters and...
 Forum: Operation Billion Digits 2021-06-02, 02:46 Replies: 11 Views: 767 Posted By Dr Sardonicus my what?? :w00t: Maybe yours![/QUOTE]:paul: Not... my what?? :w00t: Maybe yours![/QUOTE]:paul: Not "people." "Klingons!"
 Forum: kriesel 2021-06-01, 14:02 Replies: 64 Views: 21,069 Posted By Dr Sardonicus The worst passenger ship disaster in the US, the... The worst passenger ship disaster in the US, the burning of the General Slocum on June 15, 1904, killed over a thousand people. The ship had been inspected and found "safe" a month earlier. ...
 Forum: Operation Billion Digits 2021-06-01, 13:31 Replies: 11 Views: 767 Posted By Dr Sardonicus There appears to be plenty of TF work available... There appears to be plenty of TF work available seeking small factors of 2^p - 1 for p currently under consideration by GIMPS. There is also plenty of work available to try to crack 2^p - 1 which...
 Forum: Hardware 2021-05-31, 14:30 Replies: 57 Views: 2,735 Posted By Dr Sardonicus Tangible forms of money - particularly precious... Tangible forms of money - particularly precious metals - are reusable, and have the advantage that they obviate any question about whether the payer has it. Of course, they have the disadvantage...
 Forum: Lone Mersenne Hunters 2021-05-30, 13:41 Replies: 1,886 Views: 235,105 Posted By Dr Sardonicus Liar! Only 109 bits, 109.25 to be more exact.... Liar! Only 109 bits, 109.25 to be more exact. :razz:[/QUOTE]Oops. From my "I can't count" liturgy: Versicle: How many bits in two to the first power? Responsory: Two, two. Versicle: How...
 Forum: Hobbies 2021-05-29, 12:36 Replies: 111 Views: 32,880 Posted By Dr Sardonicus The ornamental Agave americana is commonly known... The ornamental Agave americana is commonly known as the "century plant," although it usually only grows for 10-20 years before it flowers and dies.† Fargesia nitida seems much more deserving of...
 Forum: Soap Box 2021-05-28, 23:56 Replies: 34 Views: 3,149 Posted By Dr Sardonicus The present situation is industry-wide. From the... The present situation is industry-wide. From the story I linked to:
 Forum: Lounge 2021-05-28, 23:45 Replies: 25 Views: 780 Posted By Dr Sardonicus In theory, the victim could sue the dog's owner... In theory, the victim could sue the dog's owner for any resulting injury or damage. In practice, it's better if the at-fault owners just do the right thing. There were two (non-traffic)...
 Forum: Hobbies 2021-05-28, 23:17 Replies: 111 Views: 32,880 Posted By Dr Sardonicus I have a vague recollection from around 1980 of... I have a vague recollection from around 1980 of seeing a story on the national news about bamboo and the giant panda. The bamboo in one region in Sichuan Province where the giant panda lives was...
 Forum: Lounge 2021-05-28, 13:59 Replies: 25 Views: 780 Posted By Dr Sardonicus Things don't work like that here.[/QUOTE]I wasn't... Things don't work like that here.[/QUOTE]I wasn't being entirely serious... I don't know of anywhere that things DO work that way. Hopefully your own insurance will pay the bills. Hopefully they...
 2021-05-28, 13:16 Replies: 10 Views: 1,300 Posted By Dr Sardonicus Definitely needs to be prime.[/QUOTE]:confused2: ... Definitely needs to be prime.[/QUOTE]:confused2: Many reports to the "fond of a factor? ..." thread, e.g. this one (https://www.mersenneforum.org/showpost.php?p=578559&postcount=1860) for...
 Forum: Lounge 2021-05-28, 01:09 Replies: 25 Views: 780 Posted By Dr Sardonicus They should find out whose dog it was, and have a... They should find out whose dog it was, and have a little chat with their homeowners insurance carrier. If that doesn't work, sue the dog's owners for all the money in the world. Meanwhile, hope...
 Forum: Soap Box 2021-05-27, 12:01 Replies: 34 Views: 3,149 Posted By Dr Sardonicus Standoff Between Farmers And Tractor Makers... Standoff Between Farmers And Tractor Makers Intensifies Over Repair Issues (https://www.npr.org/2021/05/26/1000400896/standoff-between-farmers-and-tractor-makers-intensifies-over-repair-issues)
 Showing results 1 to 25 of 1000

All times are UTC. The time now is 11:33.

Sat Jun 12 11:33:16 UTC 2021 up 15 days, 9:20, 0 users, load averages: 2.01, 1.65, 1.56