Erdős-primes: Difference between revisions

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<lang J>NB. erdos primes greater than !k and less than or equal to !k+1
<lang J>NB. erdos primes greater than !k and less than or equal to !k+1 (where !k is the factorial of k)
erdospr=: {{ k=. y
erdospr=: {{ k=. y
f=. !k+0 1
f=. !k+0 1