[[2021]] is not prime (composite): [[43]] * [[47]]
Prime neighborhood: [[2003]], [[2011]], [[2017]], [[2021]], [[2027]], [[2029]], [[2039]]
Prime gap: 10 (interval [[2017]] to [[2027]])
Primes up to 2021: [[2]], [[3]], [[5]], [[7]], [[11]], [[13]], [[17]], [[19]], [[23]], [[29]], [[31]], [[37]], [[41]], [[43]], [[47]], [[53]], [[59]], [[61]], [[67]], [[71]], [[73]], [[79]], [[83]], [[89]], [[97]], [[101]], [[103]], [[107]], [[109]], [[113]], [[127]], [[131]], [[137]], [[139]], [[149]], [[151]], [[157]], [[163]], [[167]], [[173]], [[179]], [[181]], [[191]], [[193]], [[197]], [[199]], [[211]], [[223]], [[227]], [[229]], [[233]], [[239]], [[241]], [[251]], [[257]], [[263]], [[269]], [[271]], [[277]], [[281]], [[283]], [[293]], [[307]], [[311]], [[313]], [[317]], [[331]], [[337]], [[347]], [[349]], [[353]], [[359]], [[367]], [[373]], [[379]], [[383]], [[389]], [[397]], [[401]], [[409]], [[419]], [[421]], [[431]], [[433]], [[439]], [[443]], [[449]], [[457]], [[461]], [[463]], [[467]], [[479]], [[487]], [[491]], [[499]], [[503]], [[509]], [[521]], [[523]], [[541]], [[547]], [[557]], [[563]], [[569]], [[571]], [[577]], [[587]], [[593]], [[599]], [[601]], [[607]], [[613]], [[617]], [[619]], [[631]], [[641]], [[643]], [[647]], [[653]], [[659]], [[661]], [[673]], [[677]], [[683]], [[691]], [[701]], [[709]], [[719]], [[727]], [[733]], [[739]], [[743]], [[751]], [[757]], [[761]], [[769]], [[773]], [[787]], [[797]], [[809]], [[811]], [[821]], [[823]], [[827]], [[829]], [[839]], [[853]], [[857]], [[859]], [[863]], [[877]], [[881]], [[883]], [[887]], [[907]], [[911]], [[919]], [[929]], [[937]], [[941]], [[947]], [[953]], [[967]], [[971]], [[977]], [[983]], [[991]], [[997]], [[1009]], [[1013]], [[1019]], [[1021]], [[1031]], [[1033]], [[1039]], [[1049]], [[1051]], [[1061]], [[1063]], [[1069]], [[1087]], [[1091]], [[1093]], [[1097]], [[1103]], [[1109]], [[1117]], [[1123]], [[1129]], [[1151]], [[1153]], [[1163]], [[1171]], [[1181]], [[1187]], [[1193]], [[1201]], [[1213]], [[1217]], [[1223]], [[1229]], [[1231]], [[1237]], [[1249]], [[1259]], [[1277]], [[1279]], [[1283]], [[1289]], [[1291]], [[1297]], [[1301]], [[1303]], [[1307]], [[1319]], [[1321]], [[1327]], [[1361]], [[1367]], [[1373]], [[1381]], [[1399]], [[1409]], [[1423]], [[1427]], [[1429]], [[1433]], [[1439]], [[1447]], [[1451]], [[1453]], [[1459]], [[1471]], [[1481]], [[1483]], [[1487]], [[1489]], [[1493]], [[1499]], [[1511]], [[1523]], [[1531]], [[1543]], [[1549]], [[1553]], [[1559]], [[1567]], [[1571]], [[1579]], [[1583]], [[1597]], [[1601]], [[1607]], [[1609]], [[1613]], [[1619]], [[1621]], [[1627]], [[1637]], [[1657]], [[1663]], [[1667]], [[1669]], [[1693]], [[1697]], [[1699]], [[1709]], [[1721]], [[1723]], [[1733]], [[1741]], [[1747]], [[1753]], [[1759]], [[1777]], [[1783]], [[1787]], [[1789]], [[1801]], [[1811]], [[1823]], [[1831]], [[1847]], [[1861]], [[1867]], [[1871]], [[1873]], [[1877]], [[1879]], [[1889]], [[1901]], [[1907]], [[1913]], [[1931]], [[1933]], [[1949]], [[1951]], [[1973]], [[1979]], [[1987]], [[1993]], [[1997]], [[1999]], [[2003]], [[2011]], [[2017]] (306 total).
[[2021]] is not a centered hexagonal number.
The closest centered hexagonal numbers are [[1951]] (index # [[26]]) and [[2107]] (index # [[27]]).
First 20 centered hexagonal numbers: [[1]], [[7]], [[19]], [[37]], [[61]], [[91]], [[127]], [[169]], [[217]], [[271]], [[331]], [[397]], [[469]], [[547]], [[631]], [[721]], [[817]], [[919]], [[1027]], [[1141]].
[[square]]: 4084441
[[square root]]: 44.9555
[[cube]]: 8254655261
[[cube root]]: 12.6432
[[natural log]] (ln): 7.6113
[[base-10 log]] (log10): 3.3056
[[base-2 log]] (log2): 10.9809
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A : [[podcast]].
Series : [[Red Menace]]
URL : https://redmenace.libsyn.com/ipcc
They do a good recap on the [[IPCC Sixth Assessment Report]].
They talk about how [[climate anxiety]] should not become [[climate apathy]] and the need to organise even in the face of almost certainly pushing beyond 1.5 and probably 2 degrees and things falling apart.
Because capitalism will not simply collapse along with the climate. It will likely accelerate and goose step towards its latent fascistic tendencies.
Also, interesting discussion on the merits of individual behaviour in the midst of an obvious need for large structural change. [[Horizontalism vs verticalism]]. Given they tend towards [[vanguardism]] and the need for a vertical party, good to hear some constructive thoughts on the need for [[prefiguration]] too.
It’s fascinating that it may have taken longer to resolve because engineers couldn’t get to where they needed to be to fix the thing that was broken, because of access cards that relied on the thing that was broken.
Also the amount of knock-on effect and the fragility of some key bits of the internet is fascinating/worrying - this thread on Hacker News is good - https://news.ycombinator.com/item?id=28751441 - basically millions of devices around the world doing a denial of service by constantly asking ‘where is facebook.com’ and slowing down services for everyone else.
And then sites that rely on ‘Log in with Facebook’ (edited)
And parts of the world that can only connect via Facebook Free Basics.
Yikes! Since the DNS records of Facebook/Instagram/WhatsApp can’t be resolved anymore, every device with one of their apps installed is now actively DDoSing recursive DNS resolvers. This may cause problemsβ¦ for the entire internet.
A : [[podcast]]
Comparing and contrasting [[degrowth]] and [[Green New Deal]].
The 2021 Inktober was fun. It was my first year in university, I wasn't extra tired back then, and many drawings turned out very well. Took me 5 years to upload it to the garden; finally did that in October 2026.
Links in captions lead to full versions.
A : [[podcast]]
URL : https://fossandcrafts.org/episodes/38-spritely-updates-november-2021.html
Series : [[FOSS and Crafts]]
[[Spritely]] all still sounds really interesting, and like it’s getting a lot closer to prime time.
Would like to learn more about [[Spritely Brux]], the identity / [[petnames]] stuff.
Cool some of it has been ported to [[Guile]], too.
I am beginning 21 days of holidays. I intend to keep a journal in [[august 2021]].
This is not affecting me as I don’t drive. But I wonder what the knock-on effects will be. And the main reason being a driver shortage so it’s part of an overall supply chain crisis. The stories about queues and some people’s behaviour on the petrol station forecourts is all a bit foreboding towards your standard dystopian sci-fi resource crisis.
βItβs fuel anxiety,β said Blason. βWhen that needle creeps down to the red or anywhere near then itβs panic stations. Where are we going to get it, whoβs got it? Itβs brought out a different side in people in all honesty.β
Food and fuel mostly.
Boris Johnsonβs government has made a dramatic U-turn in an attempt to save Christmas β with a raft of extended emergency visas to help abate labour shortages that have led to empty shelves and petrol station queues.
β Emergency visa scheme extended in major U-turn by Boris Johnson | Supply chaiβ¦
Both natural gas and petrol.
[[UK fuel crisis 2021]].
The slaughter of healthy pigs has begun on British farms, with farmers forced to kill animals to make space and ensure the continued welfare of their livestock, amid an ongoing shortage of workers at slaughterhouses.
Pig farmers have been warning for several weeks that labour shortages at abattoirs have led to a backlog of as many as 120,000 pigs left stranded on farms long after they should have gone to slaughter.
The meat industry is one of many sectors of the UK economy grappling with labour shortages linked to Brexit and the pandemic, while a lack of delivery workers and drivers has affected supply chains. β Hundreds of healthy pigs culled amid UK shortage of abattoir workers | Supplyβ¦
Grim. This is unpleasant for so many reasons. Makes me glad to be [[vegetarian]] and not feel part of this particular problem.
Food banks have said they will have to shrink the size of the parcels they give to struggling families owing to declining stock levels caused by the HGV crisis, supply shortages and a collapse in public donations.
β Food banks warn of smaller parcels due to HGV supply shortages | Food banks |β¦
A combination of declining food bank stocks and an expected explosion in demand for charity support after universal credit is cut this week has led some to prepare emergency measures to eke out food supplies further, including making parcels smaller and offering less variety
β Food banks warn of smaller parcels due to HGV supply shortages | Food banks |β¦
