A182750 a(n) = the largest multiple of n with n digits and exactly n divisors; a(n) = 0 if no such number exists.

1, 0, 0, 0, 0, 0, 0, 99999992, 998117649, 0, 25937424601, 999999999924, 0, 0, 0, 0, 0, 999999996643936800, 0, 0, 0, 0, 0

Offset

1,8

Links

Table of n, a(n) for n=1..23.

Formula

A000005(a(n)) = n for a(n) > 0.

a(n) >= A182749(n).

Crossrefs

Cf. A073904, A182749.

Sequence in context: A168640 A202722 A330129 * A033424 A017180 A017276

Adjacent sequences: A182747 A182748 A182749 * A182751 A182752 A182753

Keyword

nonn,base

Author

Jaroslav Krizek, Nov 27 2010

Extensions

More terms from Harvey P. Dale, Mar 02 2018

Status

approved