perplexus.info :: Numbers : It is not 8^5

It is not 8^5 (Posted on 2015-06-24)

In decimal representation find the largest N-digit number which is an N-th power.

Submitted by Ady TZIDON

Rating: 5.0000 (1 votes)

Solution: (Hide)

It is 9^N for N=1,2,3,...21
The biggest is 9^21 =109418989131512359209 (a 21-digit number)

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
8^5	Math Man	2015-06-25 08:34:46
re: Solution (Spoiler)	Charlie	2015-06-24 09:48:19
Solution (Spoiler)	broll	2015-06-24 08:45:20

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