|
Search: id:A084898
|
|
|
| A084898 |
|
Numbers n such that n^n*n!+1 is prime. |
|
+0
4
|
| |
|
|
OFFSET
|
1,2
|
|
|
COMMENT
|
All terms under 500 correspond to certified primes (Primo 2.2.0 beta). Next term >2500. - Ryan Propper (rpropper(AT)stanford.edu), Apr 05 2006
|
|
EXAMPLE
|
7 is in the sequence because 7^7*7!+1=4150656721 is prime.
|
|
MATHEMATICA
|
Do[If[PrimeQ[n^n*n!+1], Print[n]], {n, 600}]
|
|
CROSSREFS
|
Cf. A002981, A002982.
Sequence in context: A048465 A049112 A100720 this_sequence A101302 A102948 A061263
Adjacent sequences: A084895 A084896 A084897 this_sequence A084899 A084900 A084901
|
|
KEYWORD
|
more,nonn
|
|
AUTHOR
|
Farideh Firoozbakht (f.firoozbakht(AT)sci.ui.ac.ir), Jul 14 2003
|
|
EXTENSIONS
|
One more term from Ryan Propper (rpropper(AT)stanford.edu), Apr 05 2006
|
|
|
Search completed in 0.002 seconds
|
