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Old 2021-09-09, 08:18   #474
lghu
 
Nov 2019

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I found a Leyland PRP with more than 500,000 digits, details later...
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Old 2021-09-11, 12:38   #475
lghu
 
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pfgw64: ((100263^98600)+(98600^100263)) is 3-PRP! (7167.1435s+0.0099s)

ecpp-dj -bpsw: ((100263**98600)+(98600**100263)) PROBABLE PRIME (135355 sec)

Gabor Levai
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Old 2021-09-11, 12:43   #476
paulunderwood
 
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Quote:
Originally Posted by lghu View Post
pfgw64: ((100263^98600)+(98600^100263)) is 3-PRP! (7167.1435s+0.0099s)

ecpp-dj -bpsw: ((100263**98600)+(98600**100263)) PROBABLE PRIME (135355 sec)

Gabor Levai
Although it good to us another library, for numbers of this size you can use the -tc switch of PFGW to get a combined Fermat+Lucas result, which is much quicker.

Congrats for such a huge find.

Last fiddled with by paulunderwood on 2021-09-11 at 12:46
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Old 2021-09-12, 09:33   #477
pxp
 
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100263^98600+98600^100263,500702

If you haven't already done so, you should submit this to PRPTop, here.
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Old 2021-09-13, 08:39   #478
lghu
 
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Quote:
Originally Posted by paulunderwood View Post
Although it good to us another library, for numbers of this size you can use the -tc switch of PFGW to get a combined Fermat+Lucas result, which is much quicker.

Congrats for such a huge find.
Thanks.
((100263^98600)+(98600^100263)) is Fermat and Lucas PRP! (37359.5544s+0.0101s)
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