You can download GW-BASIC from my website
I have run the program for these temperatures:
25 deg r=71594
50 deg r=22832.9
75 deg r=8581.3
100 deg r=3677.2
Thanks for the reply. I think there is something wrong with my formula.
The formula and values I posted were for a 100k @25C NTC.
When I worked it out on my calculator I got 71k just like you did.
This should be 100k. This is why I was questioning myself about my calcuator skills.