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A133834
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Numbers n such that primorial(n)^4 + 1 is prime.
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0
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OFFSET
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1,2
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COMMENTS
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Seven terms found and primes proved by PrimeForm ([N-1, Brillhart-Lehmer-Selfridge]). p(1282)#^4 + 1 has 18042 decimal digits. There are no more terms <= 2810.
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LINKS
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EXAMPLE
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As primorial(2)^4 + 1 = (3*2)^4 + 1 = 1297 is prime, 2 is a term.
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CROSSREFS
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KEYWORD
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hard,nonn
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AUTHOR
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STATUS
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approved
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