paulyang120 @ 2023-03-20 17:25:04
#include<bits/stdc++.h>
using namespace std;
int p,m;
void ss(int k)
{
for(int j=3;j*j<=k;j+=2)
{
if(k%j==0)
return;
}
cout<<k<<endl;
}
bool hui(int x)
{
p=x;
m=0;
while(p>0)
{
m=m*10+p%10;
p/=10;
}
if(m==x)
return true;
else
return false;
}
int main()
{
int a,b;
cin>>a>>b;
if(a%2==0)
a++;
for(int i=a;i<=b;i+=2)
{
if(hui(i)==1)
ss(i);
if(i+1==2)
cout<<2<<endl;
}
}
by InversionShadow @ 2023-03-20 17:30:43
@yangzhengxi
最小的回文质数是
by Jackson_Miller @ 2023-03-20 18:33:08
@yuandingquan1101 应该是最大的吧
by InversionShadow @ 2023-03-20 18:58:59
@Jackson_Miller 对,打错了