Thread: Double checking View Single Post
 2007-09-02, 08:08 #10 gd_barnes     May 2007 Kansas; USA 7×11×137 Posts Update on double-check work The LLR for n=25K to 50K has completed the range of k=300 to 750 so far. I went ahead and double-checked the primes found so far in that range vs. the Prime Search primes on our site. I found the following problems: Missing primes: 367*2^39177-1 407*2^31826-1 497*2^33266-1 619*2^32539-1 619*2^40693-1 675*2^48779-1 Incorrect prime: 665*2^40408-1 should be 665*2^40498-1 Kosmaj, the LLR for k=109, 203, 205, 215, 217, and 257 that you suggested needing double-checked has completed the range of n=100K to 165K for all k's. The below primes were confirmed. No additional primes have been found so far. Estimated time to completion is now a little over 2 weeks on one dedicated core. Confirmed primes: 203 105890 203 115350 205 128019 257 133980 109 141227 217 148089 Interesting info.: Error rate for k=300 to 1001: n=0 to 10K; 1 error out of 7066 primes = 0.01% n=10K to 25K; 9 out of 940 = 0.96% n=25K to 50K so far; 7 out of 451 = 1.55% So the error rate in that range of k continues to increase as the value of n increases. Gary