The number ends in 1 not the power of two, which must end in 2.
Brent
On 1/20/2016 11:49 AM, John Mikes wrote:
JKC: is that so indeed? my minuscule math tells me that if something
(any long number - or short) ends with a "1" then the/*_MINUS 1_*/ of
this number ends in a zero, dividable e.g. by 2, even 10 etc... 22
million digits???
John M
On Wed, Jan 20, 2016 at 1:26 PM, John Clark <[email protected]
<mailto:[email protected]>> wrote:
The largest known prime number has just been found, 2^74207281 -1
is prime; it starts off as 300376 carries on for a bit and then
concludes with 436351. I omitted the middle bit because the entire
number is 22,338,618 digits long.
https://www.washingtonpost.com/news/speaking-of-science/wp/2016/01/20/the-newest-prime-number-is-more-than-22-million-digits-long/
John K Clark
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