Thread: Factorial puzzle View Single Post
2015-04-02, 12:58   #6
science_man_88

"Forget I exist"
Jul 2009
Dumbassville

26×131 Posts

Quote:
 Originally Posted by ATH No other examples for y,z < 10000 except the trivial cases.
using pari I've checked for solutions using up to the last 10000 factorials before a factorial up to 30000! I think:

Code:
factorfactorial(e=0)={
a=parvector(10000,n,(n+e)!);
parfor(x=10,#a,
d=precprime(x);x-d,
c,
if(c==0||c>=10000,next());
b=setintersect(vector(c-1,t,a[x]/a[x+t-(c+1)]),a);
if(b==[],,
print(x","b)
)
);
e=e+#a;
print(e);
factorfactorial(e)
};
doh I see an error now and it might of been slowing it down.

Last fiddled with by science_man_88 on 2015-04-02 at 13:58