giant number is not a prime
 

I guess that 6 * 10 ^ (900.000.000.000) is not belog to twin prime number . any idea ?

[QUOTE=drmurat;557011]I guess that 6 * 10 ^ (900.000.000.000) is not belog to twin prime number . any idea ?[/QUOTE]Given that the number you posted is divisible by 2 then that means you are correct, it isn't part of any prime sequence. :tu:

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

[QUOTE=retina;557012]Given that the number you posted is divisible by 2 then that means you are correct, it isn't part of any prime sequence. :tu:

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

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

[QUOTE=drmurat;557016]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[/QUOTE]

I also mention values of k in 6 x k +1 and 6 x k 1

The giant number iş not twin prime
 

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[QUOTE=drmurat;557016]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[/QUOTE]

Yes, that is true, since if N denotes your number then N+2 is divisible by 3 and N-2 is divisible by 107.

[QUOTE=R. Gerbicz;557036]Yes, that is true, since if N denotes your number then N+2 is divisible by 3 and N-2 is divisible by 107.[/QUOTE]

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

[QUOTE=drmurat;557040]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[/QUOTE]

I've thought that I understand you, but not. Learn more Maths, and more English.

[QUOTE=R. Gerbicz;557042]I've thought that I understand you, but not. Learn more Maths, and more English.[/QUOTE]

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

[QUOTE=drmurat;557044]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[/QUOTE]

This Robert at his computer:
:primenet:

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

[QUOTE=paulunderwood;557046]This Robert at his computer:
:primenet:

Know that a*b mod n is the same as (a mod n) * (b mod n) :smile:[/QUOTE]

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