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A077516 Largest n-digit number beginning with n and having n divisors, or 0 if no such number exists. 1
1, 29, 361, 4997, 0, 699964, 0, 89999995, 999887641, 1099999504, 0, 129999999988, 0, 14999999996224, 159999933195664, 1699999999999998, 0, 189999999999999477, 0, 20999999999999999817, 219999996968515384384, 2299999999999999765504, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

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

EXAMPLE

a(4) = 4989 = 3*1663 has 4 divisors 1,3,1663 and 4989. a(5) = 0 as 13^4 =28561 < 50000 < 59999 < 83521 = 17^4.

CROSSREFS

Cf. A077515.

Sequence in context: A239743 A022689 A234810 * A142278 A281059 A010834

Adjacent sequences:  A077513 A077514 A077515 * A077517 A077518 A077519

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy, Nov 08 2002

EXTENSIONS

Corrected and extended by Ray Chandler, Aug 15 2003

STATUS

approved

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Last modified January 22 01:28 EST 2022. Contains 350481 sequences. (Running on oeis4.)