Go Back > Extra Stuff > Blogorrhea > enzocreti

Thread Tools
Old 2020-02-17, 16:28   #1
Mar 2018

17·31 Posts
Default primes of the form (123+4^(9*10^n))/163

Are there infinitely many prime of the form

(123+4^(9*10^n))/163/31? with n some integer

(4^90000+123)/163/31 is prime?

Or are there other factors?

Last fiddled with by enzocreti on 2020-02-17 at 17:45
enzocreti is offline   Reply With Quote

Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Primes of the form (b+-1)*b^n+-1 and b^n+-(b+-1) sweety439 sweety439 162 2020-05-15 18:33
Primes of the form 56^n+1 enzocreti enzocreti 5 2020-02-17 16:35
Primes of the form n+-phi(n) carpetpool carpetpool 3 2017-01-26 01:29
Primes of the form a^(2^n)+b^(2^n) YuL Math 21 2012-10-23 11:06
Primes of the form 2.3^n+1 Dougy Math 8 2009-09-03 02:44

All times are UTC. The time now is 14:48.

Wed Nov 25 14:48:58 UTC 2020 up 76 days, 11:59, 3 users, load averages: 1.79, 1.60, 1.48

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.