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A036946
Smallest n-digit prime containing only digits 5 and 7, or 0 if no such prime exists.
+0
1
5, 0, 557, 5557, 57557, 555557, 5555777, 55555777, 555557557, 5555555557, 55555555777, 555555575557, 5555555757757, 55555555575757, 555555555555557, 5555555555557577, 55555555555777777, 555555555557557757
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 10 00:48 EST 2009. Contains 170565 sequences.
AT&T Labs Research
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