cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A165698 Numbers n such that the reversal of all six numbers n^k, k<7 are primes.

Original entry on oeis.org

110218462, 316673011, 1021262438, 1043674352, 1079713202, 1102184620, 1114558252, 3151003391, 3166730110, 3177732191, 3185342356, 3247705288, 3264209387, 3277762652, 3307639187, 9835884797, 9956850724, 9998454781
Offset: 1

Views

Author

Farideh Firoozbakht, Sep 29 2009

Keywords

Comments

This sequence is infinite because if n is in the sequence then for all
natural numbers m, 10^m*n is in the sequence.
Number of terms up to 12*10^9 is 50.

Crossrefs

Cf. A118212, A118213, A165696, A165697, A165699.

A165696 a(n) is the smallest number m such that the n numbers A004086(m^k) (digit reversal of m^k) for 0 < k < n+1 are all primes.

Original entry on oeis.org

2, 14, 325, 3244, 3244, 110218462, 32149366346, 10212002596432
Offset: 1

Views

Author

Farideh Firoozbakht, Sep 29 2009

Keywords

Examples

			Both numbers A004086(14) = 41 and A004086(14^2) = 691 are primes and 14 is the smallest number with this property so a(2) = 14.

Crossrefs

Cf. A004086, A118212, A118213, A165697, A165698, A165699.

Extensions

a(8) from Matthias Baur, Mar 03 2021
Showing 1-2 of 2 results.

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