The geocache is not at the posted coordinates*. To get the actual location, you must solve the puzzle below and enter the two-word solution into the certitude checker below.
Number theory is not as scary as it sounds, and neither is this puzzle! Formerly known as the grade school subject arithmetic, it is a branch of mathematics that deals solely with integers. It seems that mathematicians really like coming up with number sequences and giving them names. I mean, really... I had no idea. Honestly, given how many of them have been defined, it's like anybody can do it. Anybody can do this puzzle too. It doesn't require any math, other than the ability to count. After solving this, I have a feeling you'll be seeing numbers and patterns everywhere...
Identify the numbers described below. All sequences used in this puzzle are in base 10, which is our normal numbering system.
1st perfect number
2nd perfect totient number
3rd semiperfect number
5th happy number
1st primitive abundant number
2nd superior highly composite number
7th Perrin number
1st emirp
1st highly totient number
1st sublime number
1st Wilson prime
5th standard Ulam number
8th deficient number
1st Hilbert prime
3rd pentagonal number
1st composite number
3rd centered hexagonal number
4th Fubini number
2nd untouchable number
2nd highly cototient number
2nd Fibonacci number
3rd sparsely totient number
2nd Kaprekar number
1st centered triangular prime
4th tetrahedral number
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You can validate your puzzle solution with certitude.
*Not part of the puzzle: The posted coordinates are the intersection of 163rd PL SE and SE 66th ST. 163 is the 9th and final Heegner number, and 66 is the 3rd sphenic number. Isn't that fascinating? No, I suppose it isn't.
