Y by rightways, navi_09220114, tenplusten, megarnie, Adventure10, Mango247, rudransh61
Let
denote the number of positive integers less than
that are relatively prime to
. Prove that there exists a positive integer
for which the equation
has at least
solutions in
.
Proposed by Iurie Boreico







Proposed by Iurie Boreico
This post has been edited 2 times. Last edited by v_Enhance, Aug 23, 2016, 12:47 AM