A120820 Primes with n consecutive digits ascending beginning with the digit two.

1, 2, 8, 82, 118, 158, 2122, 2242, 2388

Offset

1,2

Comments

Digits are in ascending order beginning with 2 and after 9 comes 0.

The sequence "Primes with n consecutive digits descending beginning with the digit two" has only one term, 1 which represents the prime 2.

Links

Table of n, a(n) for n=1..9.

Example

8 is a term since 23456789 is a prime.

Mathematica

fQ[n_] := PrimeQ@ FromDigits@ Mod[1+Range@n, 10]; lst = {}; Do[ If[fQ@n, AppendTo[lst, n]; Print@n], {n, 10000}]; lst

Crossrefs

Cf. A006055, A120819, A120821, A120822, A120823, A120824, A120825, A120826, A120827.

Sequence in context: A134086 A297566 A013175 * A295600 A336252 A276488

Adjacent sequences: A120817 A120818 A120819 * A120821 A120822 A120823

Keyword

base,hard,nonn

Author

Robert G. Wilson v, Jul 05 2006

Status

approved