Вот я нашел: если все параметры равны 5, получается 1031752253, а wolframalpha.com утверждает, что это число не простое.
(Оффтоп)
Код:
#include <iostream>
#include <vector>
#include <cstdlib>
using namespace std;
#define PINT int
#define SQR(x) ((x)*(x))
int main() {
PINT k = 5,
w = 5,
z = 5,
h = 5,
j = 5,
q = 5,
g = 5,
n = 5,
p = 5,
e = 5,
f = 5,
a = 5,
o = 5,
x = 5,
y = 5,
r = 5,
u = 5,
d = 5,
c = 5,
l = 5,
v = 5,
m = 5,
i = 5,
b = 5,
s = 5,
t = 5,
prime =
(k+2)*(1-SQR(w*z+h+j-q)-
SQR((g*k+2*g+k+1)*(h+j)+h-z)-
SQR(2*n+p+q+z-e)-
SQR(16*(k+1)*(k+1)*(k+1)*(k+2)*
SQR(n+1)+1-f*f)-
SQR(e*e*e*(e+2)*SQR(a+1)+1-o*o)-
SQR((a*a-1)*y*y+1-x*x)-
SQR(16*r*r*y*y*y*y*(a*a-1)+1-u*u)-
SQR((SQR(a+u*u*(u*u-a))-1)*
SQR(n+4*d*y)+1-SQR(x+c*u))-
SQR(n+l+v-y)-
SQR((a*a-1)*l*l+1-m*m)-
SQR(a*i+k+1-l-i)-
SQR(p+l*(a-n-1)+
b*(2*a*b+2*a-n*n-2*n-2)-m)-
SQR(q+y*(a-p-1)+
s*(2*a*p+2*a-p*p-2*p-2)-x)-
SQR(z+p*l*(a-p)+
t*(2*a*p-p*p-1)-p*m));
cout << prime << endl;
}