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Search: id:A088554
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| A088554 |
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Primes of the form (5^x-1)/4 or (5^x+3)/4. |
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+0 1
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| 2, 7, 31, 157, 3907, 19531, 2441407, 12207031, 61035157, 305175781, 9313225746154785157, 177635683940025046467781066894531
(list; graph; listen)
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