Test added to discourage lookup solutions.
Make a checkerboard matrix
Project Euler: Problem 8, Find largest product in a large string of numbers
cos for boss?
Rotate a Matrix by 90 degrees
Determine if input is a Narcissistic number
List the emirps
List prime anagrams of a number
Compute the Euler totient function
Compute the nth term from the golden sieve
Label primes with the Erdos-Selfridge classification
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