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A230083 Smaller of two consecutive primes whose product of digits is equal and nonzero. 4
1913, 2819, 6719, 14519, 16319, 18379, 19319, 21419, 29819, 34613, 35617, 35879, 36979, 37379, 37619, 37813, 39119, 45613, 46619, 46919, 49279, 51613, 55313, 56179, 56713, 58613, 62219, 63179, 65479, 66413, 74779, 75913, 76213, 76579, 76679, 79319, 82619 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Shyam Sunder Gupta, Table of n, a(n) for n = 1..4966

EXAMPLE

1913 is in the sequence because 1913 and 1931 are consecutive primes and the product of the digits of each = 27.

MATHEMATICA

a = {}; m = 1; s = 1; Do[If[(y = Apply[Times, IntegerDigits[x = Prime[n]]]) == s && s != 0, m = m + 1; If[m > 1, AppendTo[a, Prime[n - 1]]], m = 1]; s = y, {n, 1, 10000}]; a

CROSSREFS

Cf. A230082, A007954, A053666.

Sequence in context: A229390 A072274 A168499 * A069567 A163678 A175517

Adjacent sequences:  A230080 A230081 A230082 * A230084 A230085 A230086

KEYWORD

nonn,base

AUTHOR

Shyam Sunder Gupta, Oct 08 2013

STATUS

approved

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Last modified June 2 18:17 EDT 2020. Contains 334787 sequences. (Running on oeis4.)