Thread: YAFU 2.0
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Old 2021-08-22, 14:19   #175
WraithX's Avatar
Mar 2006

3·173 Posts

Originally Posted by BudgieJane View Post
I'm having problems with version 2.06. It works OK on my new computer, running Windows 10 Pro, but it will not run on my old ones running Windows 7 Pro. It puts up the welcome message, waits something like half a minute, then quietly returns me to the command prompt:

Is there something I ought to have somewhere on those old computers but which is missing, but the new computer does have it?
It works fine on my Windows 7 Pro x64.

YAFU Version 2.06
Built with Microsoft Visual Studio 1922
Using GMP-ECM 7.0.4, Powered by MPIR 3.0.0
Detected Intel(R) Xeon(R) CPU E5-2687W v4 @ 3.00GHz
Detected L1 = 32768 bytes, L2 = 31457280 bytes, CL = 64 bytes
Using 1 random witness for Rabin-Miller PRP checks
Cached 664579 primes; max prime is 9999991

======= Welcome to YAFU (Yet Another Factoring Utility) =======
=======                      =======
=======     Type help at any time, or quit to quit      =======

>> factor(10^19+49)

fac: factoring 10000000000000000049
fac: using pretesting plan: normal
fac: no tune info: using qs/gnfs crossover of 100 digits
fac: no tune info: using qs/snfs crossover of 75 digits
div: primes less than 10000
fmt: 1000000 iterations
rho: x^2 + 3, starting 1000 iterations on C20
Total factoring time = 0.0400 seconds

***factors found***

PRP10 = 8532383917
PRP10 = 1172005397

ans = 1

I used the program Dependency Walker to see what dll's are linked/used by yafu. The ones I think you might be missing are VCOMP140.DLL and VCRUNTIME140.DLL.

These are included with the Microsoft Visual C++ Redistributable packages from Microsoft. You can find links to the latest here (I'd recommend both the 32-bit and 64-bit):
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