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Mathematics
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Mrexcel's user avatar
Mrexcel's user avatar
Mrexcel
  • Member for 5 years, 2 months
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question
7
Finding least positive integer $k>1$ such that there exactly exists 100 primes with the form $m!-k$
Apr 20, 2024
question
3
primes with the form $q!−p$ for prime p and n consecutive integers $q \in\{k,k+1,k+2,..k+n-1\}$
May 5, 2024
question
3
What is the minimum number of $114154$'s required to construct an expression—using only parentheses and the four basic operators—that equals 1919810? [closed]
Oct 19
question
3
Is there a solution that $p^5=p_1^5+p_2^5+p_3^5+p_4^5+p_5^5$ with all bases$\{p,p_1,p_2,p_3,p_4,p_5\} $are prime numbers？ [closed]
Nov 12
question
2
Any efficient ways to find the smallest number k such that the sum of the digits of k^3 is equal to 1000?
Jun 19, 2024
question
1
What is the largest number that is the digit sum of a $60$-digit square number? [closed]
Apr 17, 2024
question
1
How many solutions with equation n*x*y*z*w = (x + n) (y + n) (z + n) (w + n)?
Jun 20, 2024
question
0
Efficient algorithm for solving Diophantine equation $x ^ 2+y ^ 3+z ^ 5=w ^ 7$ with $\gcd (x, y, z)=1$.
Sep 21
answer
0
On the parity of number of integer solutions to $2x^2+yz=p$
Apr 18, 2024
answer
-1
The multiple of $26$ with the least digit sum
Apr 17, 2024