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 List the expressionist numbers (Posted on 2016-05-30)
Consider numbers like 343 or 2592.
343=(3+4)^3
2592=2^5*9^2.

We have just shown that some numbers stay unchanged when a number of mathematical operators are added /inserted, without changing the order of the digits.
Within our puzzle lets call those numbers expressionist numbers.
Let us limit the set of acceptable mathematical symbols to the following operators: +, -, *, /, ^, sqrt, !. and any amount of brackets.

My questions:
In the period between 10 A.D. & 2016 A.D. what years were labeled by expressionist numbers?
How many such years will there be between 2017 A.D. & 9999 A.D.?

Bonus: How about one, two (or more) 5-digit examples?

 No Solution Yet Submitted by Ady TZIDON No Rating

 Subject Author Date Part 1 down to 67 entries after eliminating the spurious Charlie 2016-06-02 07:31:32 Part 1 redone allowing unary negation Charlie 2016-06-01 08:04:18 My Top Ten armando 2016-05-31 15:37:13 Supplement to part 1 list Charlie 2016-05-31 08:40:44 re: Computer solutions Charlie 2016-05-31 07:39:57 Still there armando 2016-05-31 07:32:43 Part 2 and Bonus Charlie 2016-05-31 07:31:18 Computer "solution" part 1 -- no guarantee of completeness Charlie 2016-05-31 07:27:45 re: Little start Ady TZIDON 2016-05-31 01:33:02 Little start armando 2016-05-30 16:43:00

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