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A196023 Primes that are palindromes and have 666 in the middle. 2
16661, 76667, 3166613, 3466643, 7466647, 7666667, 145666541, 148666841, 152666251, 155666551, 169666961, 176666671, 181666181, 304666403, 305666503, 307666703, 308666803, 329666923, 347666743, 349666943, 373666373, 374666473, 383666383, 391666193, 397666793 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

N. J. A. Sloane, personal communication, 2011.

LINKS

Arkadiusz Wesolowski, Table of n, a(n) for n = 1..1000

G. L. Honaker, Jr. and Chris Caldwell, Prime Curios! 3166613

Wikipedia, Number of the Beast

Index entries for sequences related to palindromes

MATHEMATICA

Select[Table[FromDigits@Join[Flatten@IntegerDigits@PadLeft[{666}, 2, n], Reverse@IntegerDigits[n]], {n, 397}], PrimeQ] (* Arkadiusz Wesolowski, Dec 03 2011 *)

CROSSREFS

Subsequence of A131645.

Sequence in context: A170788 A057329 A232450 * A108843 A232449 A260312

Adjacent sequences:  A196020 A196021 A196022 * A196024 A196025 A196026

KEYWORD

base,nonn

AUTHOR

Arkadiusz Wesolowski, Sep 26 2011

STATUS

approved

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Last modified June 25 06:13 EDT 2017. Contains 288709 sequences.