Mathematical Headache Mystery Cache
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Difficulty:
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Terrain:
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Size: 
(small)
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This cache might hurt your brain! It is my revenge for all those tough caches I have had so much trouble solving!
The cache is not at the listed coordinates.
Congratulations to ernie66 for being FTF (without the hint) and taking my 1884 Morgan Silver Dollar as a FTF prize!
56934529822641201325130315889031793986403371
You can check your answers for this puzzle on Geochecker.com.
Additional Hints
(Decrypt)
Chmmyr: Ybbx ng gur 5gu, 16gu, 23eq, 35gu, 43eq, 49gu, 53eq, naq 77gu yrggref bs gur qrfpevcgvba nobir.
Uvqr: Onfr bs gerr