A139535 -id:A139535 - cp's OEIS frontend

A139536 Smallest prime starting with 1 and followed by a string of n 0's.

101, 1009, 10007, 100003, 1000003, 100000037, 100000007, 1000000007, 100000000019, 100000000003, 10000000000037, 100000000000031, 1000000000000037, 10000000000000061, 100000000000000013

Offset: 1

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Lekraj Beedassy, Apr 25 2008

nonn
base

Not the same as A139535 though most entries match. (First dissimilarity occurs for n=19: A139535(19)=1000000000000000000409; A139536(19)=10000000000000000000139.)

Harvey P. Dale, Table of n, a(n) for n = 1..997

Table[Module[{k=1},While[CompositeQ[10^IntegerLength[k] FromDigits[ PadRight[ {1},n,0]]+k],k+=2];10^IntegerLength[k] FromDigits[ PadRight[ {1},n,0]]+k],{n,2,20}] (* Harvey P. Dale, Aug 07 2021 *)

cp's OEIS Frontend

A139536 Smallest prime starting with 1 and followed by a string of n 0's.

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