Take the 2-minute tour ×
Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It's 100% free, no registration required.

$$48625 = 4^{5} + 8^{2} + 6^{6} + 2^{8} + 5^{4}$$

Notice that the digits of the number are in digit order, while the exponents are the digits of the number in reverse order.

Do numbers of this form have a name?

share|improve this question
1  
This is a fun question! +1 –  amWhy May 21 '13 at 0:16

1 Answer 1

up vote 11 down vote accepted

They are "tabulated" at OEIS. I use the quotes because there are only two of them, the other one being $397612$ (I don't count $1$). No name is given at that site, but there are some links there that you might follow up. If you find anything, be sure to let us know.

share|improve this answer
    
Thanks. I thought there might possibly be only one, so at least there is another example and some things to investigate. Regards –  Amzoti Feb 10 '13 at 2:54

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.