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Ulam spiral (for primes)/REXX: Difference between revisions
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==REXX==
This is the output for the REXX program to produce a Ulam spiral (for primes);
'''Output''' when the following is used for input: <tt> 416 </tt>
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▀ ▄ ▀ ▀ ▀ ▄▀ ▀ ▄▀ ▀ ▄ ▀ ▀ ▄ ▄ ▀ ▄ ▄ ▄ ▄ ▄ ▀ ▀ ▀ ▀ ▄ ▀ ▀ ▀ ▄ ▀▄ ▄ ▄ ▄ ▀ ▀ ▄ ▀ ▄ ▀ ▀▄ ▀ ▄ ▄ ▀ ▀ ▄ ▀▄ ▄ ▄ ▄▀ ▄▀ ▀ ▄ ▀ ▀ ▀ ▀
▀▄ ▄ ▄ ▄▀ ▀ ▀ ▄ ▀▄ ▄ ▀▄ ▀ ▀▄ ▀ ▀ ▀ ▄ ▀ ▄ ▀ ▄ ▀ ▀ ▀ ▄ ▄▀ ▄ ▄ ▀▄ ▀▄ ▄ ▄ ▄ ▀ ▀ ▀ ▀ ▀ ▀ ▄ ▄ ▀ ▄ ▄ ▄ ▀ ▄ ▀ ▄ ▀▄ ▀ ▀ ▄ ▀ ▀
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1 is the starting point, 173056 numbers used, 15758 primes found, largest prime: 173053
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1 is the starting point, 173056 numbers used, 15758 primes found, largest prime: 173053
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