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A277554
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Positive integers n such that 7^n == 3 (mod n).
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5
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1, 2, 46, 2227, 6684830083, 12827743861, 151652531182, 155657642297, 3102126273955, 11006109076099, 50473807426174, 172794904196354
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OFFSET
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1,2
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COMMENTS
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No other terms below 10^15.
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LINKS
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PROG
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CROSSREFS
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KEYWORD
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nonn,hard,more
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AUTHOR
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STATUS
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approved
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