login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A096525 Primes of form n.0.n+1, where '.' represents concatenation. Or, primes of form 10^(k+1)*n + n + 1, where k is the number of digits in n. 2
607, 809, 20021, 36037, 38039, 42043, 48049, 50051, 66067, 72073, 78079, 96097, 1280129, 1400141, 1500151, 1520153, 1880189, 2120213, 2160217, 2180219, 2720273, 2960297, 3000301, 3180319, 3300331, 3360337, 3600361, 3660367 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Robert Israel, Table of n, a(n) for n = 1..10000

MAPLE

select(isprime, [seq(x+1+x*10^(2+ilog10(x+1)), x=2..1000, 2)]); # Robert Israel, Nov 13 2017

CROSSREFS

Cf. A096524.

Sequence in context: A283639 A332160 A131215 * A142554 A345875 A252436

Adjacent sequences:  A096522 A096523 A096524 * A096526 A096527 A096528

KEYWORD

base,easy,nonn

AUTHOR

Jason Earls, Jun 23 2004

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 18 15:36 EST 2022. Contains 350455 sequences. (Running on oeis4.)