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.

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

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