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A096178
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Primes of the form primorial(p)/2+2.
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4
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3, 5, 17, 107, 15017, 3234846617, 100280245067, 3710369067407, 307444891294245707, 961380175077106319537, 139867498408927468089138080936033904837498617
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OFFSET
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1,1
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COMMENTS
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LINKS
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FORMULA
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EXAMPLE
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a(4) = 107 because 107 is a prime of the form primorial(7)/2 + 2 = A070826(4) + 2 = 2*3*5*7/2 + 2.
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PROG
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(PARI) for(n=1, 30, p=prod(k=1, n, prime(k))/2+2; if(ispseudoprime(p), print1(p, ", "))) \\ Hugo Pfoertner, Dec 26 2019
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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