Palindrome primes (a.k.a. Elementary S03E03 "Just a Regular Irregular") - Page 2

science_man_88 · 2014-11-16, 13:30

Quote:

Originally Posted by Batalov

Aw, big deal! Puzzle: find more of these.

10^88+666*10^43 +1
edit: 10^1016+666*10^507+1
10^1220+666*10^659+1
edit2: 10^30 +10^14 +1

Code:

forstep(x=4,1300,2,if(isprime(10^x+666*10^((x/2)-1)+1),print(x)))

Batalov · 2014-11-16, 19:03

Good job, science_man_88.
_______________

I found one more of the the upside-down Belphegor's Primes.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Is CEMPLLA 1.5 "the only software in the world capable of discovering" something? Not really.	CRGreathouse	Number Theory Discussion Group	51	2018-12-16 21:55
Aouessare-El Haddouchi-Essaaidi "test": "if Mp has no factor, it is prime!"	wildrabbitt	Miscellaneous Math	11	2015-03-06 08:17
Hoot discussion - "Beastly primes".	Arkadiusz	Math	12	2011-11-28 15:52
Prime-Related History: Leibniz' "Universal Language Based on Primes"	ewmayer	Math	10	2007-03-02 12:47
Would Minimizing "iterations between results file" may reveal "is not prime" earlier?	nitai1999	Software	7	2004-08-26 18:12

2014-11-16, 19:03	#13
Batalov "Serge" Mar 2008 Phi(4,2^7658614+1)/2 3⁶·13 Posts	Good job, science_man_88. _______________ I found one more of the the upside-down Belphegor's Primes.