Perhaps an easy cache to find, but requires some effort to actually sign the log.
Simple math and a few moments of your time will give you the information you need to access the container.
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-- You are invited to visit my other caches --
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https://www.geocaching.com/geocache/GCB5CZW
Log this geocache
https://www.geocaching.com/geocache/GCAZBDT
Sums and Differences
https://www.geocaching.com/geocache/GCA94RW
Natural High