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 2020-09-15, 09:34 #1 drmurat   "murat" May 2020 turkey 53 Posts giant number is not a prime I guess that 6 * 10 ^ (900.000.000.000) is not belog to twin prime number . any idea ?
2020-09-15, 09:41   #2
retina
Undefined

"The unspeakable one"
Jun 2006
My evil lair

3×1,931 Posts

Quote:
 Originally Posted by drmurat I guess that 6 * 10 ^ (900.000.000.000) is not belog to twin prime number . any idea ?
Given that the number you posted is divisible by 2 then that means you are correct, it isn't part of any prime sequence.

Can I now also guess an even number and claim that it doesn't belog [sic] to any twin prime?

2020-09-15, 09:49   #3
drmurat

"murat"
May 2020
turkey

53 Posts

Quote:
 Originally Posted by retina Given that the number you posted is divisible by 2 then that means you are correct, it isn't part of any prime sequence. Can I now also guess an even number and claim that it doesn't belog [sic] to any twin prime?
yes I guess that the number 6 x 10 ^ (900.000.000.000) + 18 x 10 ^ ( 450.000.000.000) + 1 also is not belong to twin prime number

2020-09-15, 09:54   #4
drmurat

"murat"
May 2020
turkey

53 Posts

Quote:
 Originally Posted by drmurat yes I guess that the number 6 x 10 ^ (900.000.000.000) + 18 x 10 ^ ( 450.000.000.000) + 1 also is not belong to twin prime number
I also mention values of k in 6 x k +1 and 6 x k 1

 2020-09-15, 12:39 #5 drmurat   "murat" May 2020 turkey 53 Posts The giant number iş not twin prime ... Last fiddled with by drmurat on 2020-09-15 at 13:09
2020-09-15, 13:58   #6
R. Gerbicz

"Robert Gerbicz"
Oct 2005
Hungary

2·3·5·47 Posts

Quote:
 Originally Posted by drmurat yes I guess that the number 6 x 10 ^ (900.000.000.000) + 18 x 10 ^ ( 450.000.000.000) + 1 also is not belong to twin prime number
Yes, that is true, since if N denotes your number then N+2 is divisible by 3 and N-2 is divisible by 107.

2020-09-15, 14:15   #7
drmurat

"murat"
May 2020
turkey

53 Posts

Quote:
 Originally Posted by R. Gerbicz Yes, that is true, since if N denotes your number then N+2 is divisible by 3 and N-2 is divisible by 107.
This number isk value so we must find 6 x k and than we must look 6 x k+ 1 and 6 x k - 1to check primabilty but how did you calculated 107 easly

Last fiddled with by drmurat on 2020-09-15 at 14:46

2020-09-15, 14:50   #8
R. Gerbicz

"Robert Gerbicz"
Oct 2005
Hungary

2×3×5×47 Posts

Quote:
 Originally Posted by drmurat This number isk value so we must find 6 x k and than we must look 6 x k+ 1 and 6 x k - 1to check primabilty but how did you calculated 107 easly
I've thought that I understand you, but not. Learn more Maths, and more English.

2020-09-15, 15:09   #9
drmurat

"murat"
May 2020
turkey

53 Posts

Quote:
 Originally Posted by R. Gerbicz I've thought that I understand you, but not. Learn more Maths, and more English.
Thanks for your advice. I Will do but how did you devide such a big number to107. How did you check primabilty so easly I also give much bigger samples

Last fiddled with by drmurat on 2020-09-15 at 15:10

2020-09-15, 15:21   #10
paulunderwood

Sep 2002
Database er0rr

D7616 Posts

Quote:
 Originally Posted by drmurat Thanks for your advice. I Will do but how did you devide such a big number to107. How did you check primabilty so easly I also give much bigger samples
This Robert at his computer:

Know that a*b mod n is the same as (a mod n) * (b mod n)

2020-09-15, 15:41   #11
drmurat

"murat"
May 2020
turkey

53 Posts

Quote:
 Originally Posted by paulunderwood This Robert at his computer: Know that a*b mod n is the same as (a mod n) * (b mod n)
Thanks you but my english is not so well. And This unswer Will change my life view. Can you explain step by step how can we devide This giant number to 107 easly

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