Project Euler 10 Mystery Cache

Acknowledgements

This cache was inspired by Project Euler.

General notes

• To solve Project Euler puzzles, you will probably have to write a computer program.
• Many of the containers are small, and contain neither pen nor pencil.
• There are explicit finding notes in each geochecker.

The Puzzle

The sum of the first four primes is 2 + 3 + 5 + 7 = 17.

To find this cache, first find the seven least-significant digits of:

• the sum of the first 8,971,406 primes;
• the sum of the first 434,926 primes.

In March 2018, the cache was moved slightly. To get the new coordinates, add 0.018 to the the northing found above.