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A134996
Dihedral calculator primes: p, p upside down, p in a mirror, p upside-down-and-in-a-mirror are all primes.
+0
2
2, 5, 11, 101, 181, 1181, 1811, 18181, 108881, 110881, 118081, 120121, 121021, 121151, 150151, 151051, 151121, 180181, 180811, 181081, 188011, 188801, 1008001, 1022201, 1028011, 1055501, 1058011, 1082801, 1085801, 1088081
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 17 13:29 EST 2009. Contains 170826 sequences.
AT&T Labs Research
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