摘要： Surprisingly there are only three numbers that can be written as the sum of fourth powers of their digits: 1634 = 14 + 64 + 34 + 44 8208 = 84 + 24 + 04 + 84 9474 = 94 + 44 + 74 + 44 As 1 = 14 is not a sum it is not included. The sum of these numbers is 1634 + 8208 + 9474 = 19316. Find the sum of all the numbers that can be written as the sum of fifth powers of their digits. 阅读全文

摘要： Consider all integer combinations of ab for 2 a 5 and 2 img style="vertical-align: middle;" src="http://projecteuler.net/images/symbol_le.gif" alt="≤" width="10" height="12" border="0 阅读全文