A077180 Smallest concatenation of integers starting from 1 that is a multiple of the n-th prime.

12, 12, 12345, 1234567891011

Offset: 1

Author

Amarnath Murthy, Nov 01 2002

Keywords

• base
• nonn

Comments

The next term (a(5)) has 210 digits. - Harvey P. Dale, Aug 15 2022

Crossrefs

Cf. A007908, A077181, A077182.

Programs

Mathematica

sci[p_]:=Module[{k=2},While[!Divisible[FromDigits[Flatten[IntegerDigits/@ Range[ k]]],p],k++];FromDigits[Flatten[IntegerDigits/@Range[k]]]]; sci/@Prime[ Range[ 5]] (* Harvey P. Dale, Aug 15 2022 *)

Extensions

Next term is too large to include, but may be deduced from A077182. - Sascha Kurz, Jan 30 2003

Corrected by Sascha Kurz, Jan 30 2003