Hi, 5! Mystery Cache

This cache has been archived.

Beach_hut: Retiring this. Thanks to all who visited.

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Hidden : 1/4/2014
Difficulty:
2.5 out of 5
Terrain:
2 out of 5

Size: Size: not chosen (not chosen)

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Geocache Description:

The cache is not located at the above co-ordinates.

A puzzle cache to celebrate an unusual milestone.... We've gone from GC4 to GC5!!!


Each geocache is assigned a unique code displayed at the top of each geocache page: the GC Code. (i.e. GC4K20V for this cache) Originally this consisted of the letters GC, followed by a 4-digit alphanumeric code. This was because, at the time, most GPSes could only store 6 digits of information for a waypoint ID.

Eventually though, as the number of geocaches increased, all of the possible codes available in this system were used up, and so geocaches after that point were given a 7-digit code beginning GC1 followed by a 4-digit alphanumeric code, and then later GC2, GC3, GC4 etc. We've now used up all of the GC4 codes available, so we're on to GC5! This puzzle cache is dedicated to that fact.

(You've perhaps noticed this cache has a GC4 code: obviously we've prepared this cache and puzzle in advance of the occasion!)

In order to work out the co-ordinates for this cache:

At the point the last possible GC4 code was used up, how many unique GC codes were possibly available to be used? Call your answer ABCDEFG. Take care - the programmers at geocaching.com used one system initially and then another, so not all of the possible letter/number combinations were used. You need to emulate this to arrive at your figure.

As of writing (just before the GC4/GC5 changeover) there were 2,328,545 active geocaches. Using this and the figure you worked out earlier, what percentage of the possible quantity of GC codes are active? (obviously some are archived and some were never used, but you can ignore those) Round your answer to 3 decimal places and call it HJ.KLM%

Certain letters aren't used in GC codes to prevent confusion with similar-looking numbers. Take these letters (clue: re-arranged, they spell a man's name) and convert to numbers using (A=1, B=2, ... Z=26). Add up each number from the name until you get one two-digit number, call this NP.

The cache is located at:

North HB° KN.(M-D)EF
West CCC° (A/E)(G+A).(G/L)(P/K)(P-J)



Parking is available close by GZ. Please park considerately, safely,and legally.

You are looking for a 35mm. Please bring your own pen.

The cache is not wheelchair accessible I'm afraid.

Additional Hints (No hints available.)



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