A062217 Numbers k such that the smoothly undulating palindromic number (32*10^k - 23)/99 is a prime.

5, 9, 11, 3015, 3407, 6959, 9599, 11399, 16593, 25883

Offset: 1

Author

Patrick De Geest and Hans Rosenthal (Hans.Rosenthal(AT)t-online.de), Jun 15 2001

Keywords

• nonn
• base

Comments

Prime versus probable prime status and proofs are given in the author's table.

No further terms < 100000. - Ray Chandler, Aug 17 2011

Examples

			k=11 -> (32*10^11 - 23)/99 = 32323232323.
		

Links

• P. De Geest, SUPP Reference Table - 323
• Alexandre Zalesski, Unisingular subgroups of symplectic group Sp_2n(2) for 2n < 250, arXiv:2401.16075 [math.GR], 2024. See pp. 15, 52.
• Index entries for sequences related to smoothly undulating palindromic primes

Crossrefs

Cf. A062209-A062232, A059758, A032758.

Extensions

Edited by Ray Chandler, Aug 17 2011