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Old 2018-04-02, 22:43   #12
shortcipher
 
Mar 2018

100012 Posts
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You are quite right about the sequence I was looking at. I am very impressed that you made this inference from the few examples I provided. I was aware of the relationship between the sequences involving the various Mersenne primes.

I was checking in the database before factoring with YAFU. The fact remains that I would more readily have become aware of the existing work if all the calls I made to the API had come back FF, as they should have.

By the way, I have now continued the aliquot sequence of 2^12*(2^13-1)*3 up to term 873.
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