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

12, 12, 12345, 1234567891011

Offset

1,1

Comments

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

Links

Table of n, a(n) for n=1..4.

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 *)

Crossrefs

Cf. A077181, A077182.

Sequence in context: A222298 A122253 A156456 * A105745 A020511 A008939

Adjacent sequences: A077177 A077178 A077179 * A077181 A077182 A077183

Keyword

base,nonn

Author

Amarnath Murthy, Nov 01 2002

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

Status

approved