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Forum: And now for something completely different 2021-09-27, 05:55
Replies: 10
Views: 1,013
Posted By Alfred
I informed Makoto Kamada. Thank you.

I informed Makoto Kamada.



Thank you.
Forum: And now for something completely different 2021-06-08, 11:23
Replies: 10
Views: 1,013
Posted By Alfred
Any other in the specified range is meant.

Any other in the specified range is meant.
Forum: And now for something completely different 2021-06-08, 07:20
Replies: 10
Views: 1,013
Posted By Alfred
10^n+7: four PRPs

I've found four probable primes in the range 200001 <= n <= 500000:

n = 221628, 350071, 371696, 487291.

IMO any other 10^n+7 is composite.

The attached file should "prove" this assertion.
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