A110718 Beginning with 7, concatenation of n successive numbers such that every partial concatenation is a prime.

7, 1011, 123, 30313233, 127128129130131, 363738394041, 78910111213, 11661167116811691170117111721173, 251252253254255256257258259, 168169170171172173174175176177, 439440441442443444445446447448449

Offset

1,1

Links

Table of n, a(n) for n=1..11.

Example

7,71011,71011123,... are all prime.

Crossrefs

Cf. A110714, A110715, A110716, A110717, A110719.

Sequence in context: A173852 A062841 A349736 * A293142 A013544 A250914

Adjacent sequences: A110715 A110716 A110717 * A110719 A110720 A110721

Keyword

base,nonn

Author

Amarnath Murthy, Aug 05 2005

Extensions

More terms from Jon E. Schoenfield, Jul 11 2010

Status

approved