Find the two largest number

A * B = C

A and B should contain only non zero digits
C should contain only numbers like 10 or 100 or 1000 or 10000

for eg 5*2=10
25*4=100

Find the largest of this kind???

Thanks
Manoj:)

where does the number ends?(i cant find the largest number)

the given is of the type:
5^n*2^n=10^n
where n is the greatest.

Hey Barbie,

U got the answer... Just put some values for n... u will get the answer...

Thanks
Manoj:)

manoj.. shall i put 12 for n?
10^12=1 trillion.
thats the biggest number i think.:D

But 5^12 and 2^12 contain digits with value zero...

the question is A & B should not contain digits with value zero...

Thanks
Manoj:)

then it is 5^9 * 2^9.
1953125*512=10^7.

but i thought 5^n and 2^n should not have 0s at the end.

Barbie How about putting n=33...

I found this number in [url]http://www.shyamsundergupta.com/[/url]
Because i found this as very interesting i posted here...
You can also see lot of facinating number in the above website...
I know this is very difficult to find because of trial and error method...

Thanks
Manoj:)

are you sure that n>33 will not satisfy this condition.:confused:

In windows calculator i can try upto 5^45.... Its not possible to go after that... so i think n=33 is the largest number of that type...
You can check in the link given in my previous post...

Thanks
Manoj:)