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A341812
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Primes p such that p#-1 is divisible by the next prime after p.
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2
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OFFSET
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1,1
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COMMENTS
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The next prime after p is then in A341804.
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LINKS
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EXAMPLE
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The prime 7 is a member of this sequence because 2*3*5*7-1=209 is divisible by 11, the next prime immediately following 7.
11 is NOT a member of this sequence because 2*3*5*7*11-1=2309 is not divisible by 13 (leaves a remainder of 8), the next prime after 11.
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PROG
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(PARI) isok(p) = if (isprime(p), my(a=Mod(1, nextprime(1+p))); forprime(q=2, p, a*=q); (a == 1)); \\ Michel Marcus, Mar 03 2021
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CROSSREFS
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KEYWORD
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nonn,bref,hard,more
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AUTHOR
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STATUS
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approved
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