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Bill Allombert on Wed, 06 Nov 2024 20:23:03 +0100
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- To: pari-users@pari.math.u-bordeaux.fr
- Subject: Game: find the integers
- From: Bill Allombert <Bill.Allombert@math.u-bordeaux.fr>
- Date: Wed, 6 Nov 2024 20:22:56 +0100
- Delivery-date: Wed, 06 Nov 2024 20:23:03 +0100
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Dear PARI lovers,
A new little game!
Find positive integers n such that
2*eulerphi(n) = n+1
I know 8 solutions, but maybe there are more!
Cheers,
Bill.