Test problem 21 is faulty.
It has been updated.
Test suite has crashed again plz fix
@ Nikolaos: are you sure it's the test suite and not a server error? If you get the following message, it is due to a temporary server problem, not a specific problem: "While evaluating the solution, the server encountered an error caused by temporary unavailability of MATLAB Service. Wait a few minutes for the MATLAB Service to return, and then rescore." If you are getting this error, simply try the problem again later or on a different day.
The Goldbach Conjecture, Part 2
Count from 0 to N^M in base N.
Math with Roman Numerals
Implement simple rotation cypher
Divisible by n, prime divisors - 11, 13, 17, & 19
Singular Value Decomposition
Divisible by n, Composite Divisors
Not square-free number sequence
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