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A227892 Smaller of two consecutive palindromic primes whose product of digits is equal and nonzero. 1
191, 1129211, 3218123, 7129217, 7718177, 125292521, 146181641, 171292171, 197292791, 198292891, 316141613, 325383523, 359292953, 767292767, 773181377, 777494777, 929292929, 946141649, 983181389, 992181299, 11222922211, 11584948511, 11942924911, 11991819911 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Shyam Sunder Gupta, Table of n, a(n) for n = 1..5000

EXAMPLE

191 is in the sequence because 191 and 313 are consecutive palindromic primes and the product of the digits of each = 9.

MATHEMATICA

Select[Partition[Select[Prime[Range[542*10^6]], PalindromeQ], 2, 1], Times @@ IntegerDigits[ #[[1]]] ==Times@@IntegerDigits[#[[2]]]>0&][[All, 1]] (* Harvey P. Dale, Dec 23 2022 *)

CROSSREFS

Cf. A230083, A007954, A053666, A230228, A230200.

Sequence in context: A207218 A185716 A084003 * A118095 A155843 A187527

Adjacent sequences: A227889 A227890 A227891 * A227893 A227894 A227895

KEYWORD

nonn,base

AUTHOR

Shyam Sunder Gupta, Oct 14 2013

STATUS

approved

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Last modified January 29 01:41 EST 2023. Contains 359905 sequences. (Running on oeis4.)