A175741 Integers n for which the period of the decimal expansion of 1/n is 100.

25351, 50702, 60101, 76053, 101404, 120202, 126755, 152106, 180303, 202808, 228159, 240404, 253510, 278861, 300505, 304212, 360606, 380265, 405616, 456318, 480808, 507020, 510151, 540909, 557722, 601010, 608424, 633775, 661111, 721212, 760530, 811232, 836583, 888791, 901515, 912636, 961616

Offset

1,1

Comments

Numbers such that A007732(n) = 100. - Andrew Howroyd, Jan 14 2020

Links

Andrew Howroyd, Table of n, a(n) for n = 1..1000

Mathematica

Transpose[Select[Table[{n, Length[RealDigits[1/n][[1, -1]]]}, {n, 500000}], #[[2]]==100&]][[1]]

Prog

(PARI) is(n)={my(t=n/(2^valuation(n, 2)*5^valuation(n, 5))); 100==znorder(Mod(10, t))}
{for(n=1, 10^6, if(is(n), print1(n, ", ")))} \\ Andrew Howroyd, Jan 14 2020

Crossrefs

Cf. A007732, A120100.

Sequence in context: A174825 A269041 A130615 * A203090 A251227 A183648

Adjacent sequences: A175738 A175739 A175740 * A175742 A175743 A175744

Keyword

nonn,base

Author

Harvey P. Dale, Dec 04 2010

Extensions

Terms a(22) and beyond from Andrew Howroyd, Jan 14 2020

Status

approved