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A058375 Palindromic primes with just two distinct prime digits. 0
353, 373, 727, 757, 32323, 33533, 35353, 72227, 72727, 75557, 77377, 3222223, 3223223, 3233323, 3337333, 3353533, 3553553, 3773773, 7722277, 7733377, 7772777, 322222223, 322323223, 323222323, 323232323, 323333323, 333535333 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..27.

MATHEMATICA

Select[ Range[ 1, 780000000, 2 ], PrimeQ[ # ] && Length[ Union[ IntegerDigits[ # ] ] ] == 2 && IntegerDigits[ # ] == Reverse[ IntegerDigits[ # ] ] && Position[ IntegerDigits[ # ], 0 ] == {} && Position[ IntegerDigits[ # ], 1 ] == {} && Position[ IntegerDigits[ # ], 4 ] == {} && Position[ IntegerDigits[ # ], 6 ] == {} && Position[ IntegerDigits[ # ], 8 ] == {} && Position[ IntegerDigits[ # ], 9 ] == {} & ]

CROSSREFS

Cf. A056730.

Sequence in context: A245440 A145023 A177678 * A059635 A003294 A096739

Adjacent sequences:  A058372 A058373 A058374 * A058376 A058377 A058378

KEYWORD

nonn,base

AUTHOR

Robert G. Wilson v, Dec 18 2000

STATUS

approved

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Last modified September 23 21:16 EDT 2017. Contains 292391 sequences.