$ TZ=HST ruby primedate.rb 今日20230731は基数8で素数だからがんばろう
おっ!!
$ TZ=Japan ruby primedate.rb 今日20230801は基数18で素数だからがんばろう
おおっ!!
https://gist.github.com/zunda/ed6fb48973e8f02e8c636d3c173b6a3a
$ TZ=Japan ruby primedate.rb 今日20230802は基数51で素数だからがんばろう
ヨシ
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