The book is now available! 274
(just those submitted by Opao)
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Just showing those entries submitted by 'Opao': (Click here to show all)

+ (274 - 2)2 + (274 - 7)7 + (274 - 4)4 is prime. [Opao]

+ The 274th Lucas number plus 274 is prime. [Opao]




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