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Old 2020-08-03, 16:07   #380
garambois
 
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Oct 2011

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Yes, I did see your posts #364 and #371 and I'll look into it.
But it's going to take me a few days to run the data analysis programs.
The execution times are very long and I don't understand why.
I'll try to shorten these execution times.

I also think that to better notice things, I'll have to modify the program that gives the output :
Code:
base 2    prime 197748738449921    exponent 265
base 2    prime 197748738449921    exponent 530

base 2    prime 242099935645987    exponent 198
base 2    prime 242099935645987    exponent 396

base 2    prime 332584516519201    exponent 19
base 2    prime 332584516519201    exponent 382
In order for the output to become something like this :
Code:
base 2    prime 197748738449921    exponent 265    at index 1
base 2    prime 197748738449921    exponent 530    at index 1

base 2    prime 242099935645987    exponent 198    at index 1
base 2    prime 242099935645987    exponent 396    at index 1

base 2    prime 332584516519201    exponent 19    at index 1
base 2    prime 332584516519201    exponent 382    at index 1
Or something more like your idea that you present in post #371, like this :
Code:
prime 197748738449921 shows up 2 times (265:i1, 530:i1).
prime 242099935645987 shows up 2 times (198:i1, 396:i1).
prime 332584516519201 shows up 2 times (191:i1, 382:i1).
Indeed, for the other bases, one does not always find the repetitions of prime numbers at index 1, and besides, it is generally not at index 1 anymore.
More curious : by manually and laboriously examining (hence the need to automatically examine) the data in your file attached to post #374, it even happens that a large prime number repeats itself twice in two terms at two indexes of the same sequence.
And this may be a coincidence, but I prefer to be sure !
Then I also want to know if large prime numbers repeat more than twice in a single sequence and if so, at which indexes.
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