Doddy, the test suite does not check that the numbers are prime and five-digit. I recommend including assert(all(isprime(a)) && all(a > 9999 & a < 1e5)).
@ChrisR: your suggested tests have been added.
Is my wife right?
Longest run of consecutive numbers
Check if number exists in vector
Add two numbers
Number Puzzles - 007
Area Conversion 2
Number Puzzles - 020
Number Puzzle - 035
Number Puzzle - 059
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