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 2023-02-01, 14:46 #452 MDaniello     May 2019 Rome, Italy 3516 Posts Code: 2651751025...69 N-1 319 digits 1165310011...01 N-1 320 digits 6184084914...01 N-1 349 digits 10^358*2002+1 N-1 362 digits 6342716177...01 N-1 1002 digits 2030576991...01 N-1 1008 digits 1132190901...01 N-1 1010 digits 7702839945...01 N-1 1011 digits 1537698526...01 N-1 1012 digits 2^100013*133603707-1 N+1* 30116 digits 2^263957*226005-1 N+1* 79465 digits 2^327844*2904473715-1 N+1* 98701 digits 2^406996*22932195-1 N+1* 122526 digits 2^408989*11361-1 N+1* 123123 digits *Recently, while checking the db, I found out a handful of known primes that were classified there as U (Unknown status), and assigning them to a worker for a PRP test automatically proved them prime by N+1 test. Assigning numbers for a PRP test used to be available for U integers with less than 150k digits. However, it looks like yesterday the threshold was lowered to 100k digits. I have spotted another similar prime in the U list today, but it has >100k digits, so I am unable to assign it to a PRP test.
 2023-02-18, 10:56 #453 MDaniello     May 2019 Rome, Italy 53 Posts Code: 7438146428...21 N-1 300 digits (136##/569+1)*1194-1 N+1 322 digits 2^1063*77777+1 N-1 325 digits (1538^356+1)/(1538^4+1) N-1 1122 digits (7023^1153-1)/7022 N-1 4432 digits fibonacci(12652)^2+2 N-1 5288 digits (2^20757-3)*19140-1 N+1 6253 digits (1507^2521+1)/1508 N-1 8009 digits 117371^2015*2+1 N-1 10216 digits 1025139165*60013#+1 N-1 25992 digits 1027676400*60013#+1 N-1 25992 digits 2^224947*139-1 N+1 67718 digits 2^281095*80555475-1 N+1 84626 digits 2^294163*5169615-1 N+1 88559 digits
 2023-03-13, 21:31 #454 MDaniello     May 2019 Rome, Italy 53 Posts Code: (36^195*11+11329)/8015 N+1 301 digits 33413^746-2 N+1 3375 digits (2^10367+1)^2-2 N+1 6242 digits (92^1795+1)^2-2 N+1 7050 digits (156^1663-1)^2-2 N+1 7295 digits (4847393^2048+1)/2 N-1 13692 digits 2^249279*1222853775-1 N+1 75050 digits 2^252736*317372055-1 N+1 76090 digits 2^305693*1694614845-1 N+1 92032 digits
 2023-04-06, 18:40 #455 MDaniello     May 2019 Rome, Italy 53 Posts Code: (56^1698-1)^2-2 N+1 5937 digits (60^1717+1)^2-2 N+1 6107 digits (252^1330-1)^2-2 N+1 6388 digits (432^1227+1)^2-2 N+1 6468 digits (154^1495-1)^2-2 N+1 6541 digits (2^21701-1)*138769890-1 N+1 6541 digits (2^21701-1)*138769890+1 N-1 6541 digits (86^2053-1)^2-2 N+1 7944 digits (58^2354+1)^2-2 N+1 8303 digits (10^4299-1)^2-2 N+1 8598 digits 2^233370*317372055-1 N+1 70260 digits 2^241271*151-1 N+1 72632 digits 2^271193*2037910875-1 N+1 81647 digits 2^284790*14549535-1 N+1 85738 digits 2^295705*212270565-1 N+1 89025 digits 2^301816*445419975-1 N+1 90865 digits
 2023-04-18, 16:02 #456 chris2be8     Sep 2009 11·223 Posts Is anyone on this list submitting Primo certificates? I'm running a script to prove 300+ digit PRPs and had a load of near collisions between 480 and 495 digits. But I can't tell if whoever submitted them had any of their work wasted because I'd just submitted a certificate. I've downloaded one, it was submitted by "Anonymous", made with Primo 4.3.3 - LX64 and the input file was /home/user/Downloads/primo/4/primo_1100000004583465610.in (does anyone recognise this?) My script works on the smallest PRPs over 299 digits. So if you keep above the first 1000 PRPs you should be safe.
 2023-05-23, 16:52 #457 MDaniello     May 2019 Rome, Italy 53 Posts Code: 5386827937...01 N-1 3176 digits (1209!-97)/97 N+1 3202 digits 2^254563*406033-1 N+1 76637 digits 2^259951*135-1 N+1 78256 digits 2^284851*406033-1 N+1 85755 digits 2^290565*14549535-1 N+1 87476 digits 2^296822*155-1 N+1 89355 digits 2^310281*663301485-1 N+1 93413 digits 2^312214*1222853775-1 N+1 93995 digits 2^315661*2022381375-1 N+1 95033 digits 2^321975*3276742755-1 N+1 96934 digits 2^324527*779602395-1 N+1 97702 digits

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