A089764 Primes of the form k! followed by a 1.

11, 61, 241, 1201, 258520167388849766400001, 2631308369336935301672180121600000001, 203978820811974433586402817399028973568000000001, 5075802138772247988008568121766252272260045289880360030994059394809856000000000000001

Offset

1,1

Comments

The next term has 739 digits. - Harvey P. Dale, Jun 08 2014

Links

Table of n, a(n) for n=1..8.

Example

1201 is a prime obtained as 5! followed by a 1.

Mathematica

Select[Table[FromDigits[Join[IntegerDigits[n!], {1}]], {n, 50}], PrimeQ] (* Harvey P. Dale, Jun 08 2014 *)

Crossrefs

Cf. A089765.

Sequence in context: A141935 A222408 A001847 * A023298 A320145 A106992

Adjacent sequences: A089761 A089762 A089763 * A089765 A089766 A089767

Keyword

base,nonn

Author

Amarnath Murthy, Nov 23 2003

Extensions

More terms from Lior Manor May 10 2004

One additional term from Harvey P. Dale, Jun 08 2014

Status

approved