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Old 2022-04-17, 18:18   #90
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Dec 2003

1101010101102 Posts

Originally Posted by MJansen View Post
The gap of primorial 29*479909#/9699690 is 7186572, with 208095 digits and merit 14.998450.
The gap has end points:
29*479909#/9699690-3531714+0 is 2-PRP! (1377.0026s+0.2389s)
29*479909#/9699690-3531714+0 is 31-PRP! (1406.6504s+0.2672s)
29*479909#/9699690-3531714+0 is 61-PRP! (1324.6448s+0.3519s)
29*479909#/9699690-3531714+0 is 89-PRP! (1351.6884s+0.1892s)
29*479909#/9699690-3531714+0 is 107-PRP! (1337.2569s+0.2194s)
29*479909#/9699690-3531714+0 is 127-PRP! (1295.6427s+0.2666s)
29*479909#/9699690-3531714+0 is Lucas PRP! (5028.9635s+0.3283s)

29*479909#/9699690-3531714+7186572 is 2-PRP! (1398.9850s+0.2509s)
29*479909#/9699690-3531714+7186572 is 31-PRP! (1325.3246s+0.2589s)
29*479909#/9699690-3531714+7186572 is 61-PRP! (1257.9103s+0.2403s)
29*479909#/9699690-3531714+7186572 is 89-PRP! (1253.9708s+0.2486s)
29*479909#/9699690-3531714+7186572 is 107-PRP! (1253.6129s+0.1967s)
29*479909#/9699690-3531714+7186572 is 127-PRP! (1316.4862s+0.3536s)
29*479909#/9699690-3531714+7186572 is Lucas PRP! (6843.9628s+0.2712s)
Congratulations again on another record.

Sorry, I'm not going to double check this gap just after finishing the other one.

In the future I think it would be beneficial to start the sieving longer time before you want to use all the cores on the PRP tests and then let sieving run longer. Each PRP test takes 10-20 min on 1 core depending on the CPU, and I'm pretty sure sieving finds more than 6 factors per hour after 1e12, it is probably beneficial to 2e12 or even longer.
Since the sieving is single threaded it is just a matter of starting it on 1 core like 1-2 weeks before you want to use lots of cores for all the PRP tests.

Last fiddled with by ATH on 2022-04-17 at 18:19
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