Thanks :smile:
I think that taking k=101 till n=9M would take a single person couple of years... right now I have plans till n=2M and then I'll decide what to do next :unsure:

3645*2^412910-1 (124302 digits)

39*2^781220-1 (235173 digits)

From the 4th Drive:

241*2^497679-1 (149819 digits)

1515*2^391554-1 (117873 digits)

880923615*2^365619-1 (110072 digits)

From the 4th Drive :cool:

293*2^517242-1 (155708 digits)

From the 4th Drive, found by John, just reported to Top-5000:

293*2^421330-1 (126836 digits)

From the k=15, n>1M:

15*2^1084010-1 (326321 digits)


:banana: :banana:

[QUOTE=amphoria;88095]15*2^1084010-1 (326321 digits)[/QUOTE] :shock: CONGRATULATIONS :shock:

Fantastic Amphoria! :grin: