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Old 2018-06-05, 08:36   #1860
Thomas11
 
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From our 7th drive:

2895*2^1762011-1 (530422 digits)
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Old 2018-06-21, 05:15   #1861
VBCurtis
 
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"Curtis"
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13*2^4333087-1 is prime. 1304391 digits.

My first over 4 million.
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Old 2018-06-21, 07:41   #1862
LaurV
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Quote:
Originally Posted by VBCurtis View Post
My first over 4 million.
Congrats! See you at 4 million (decimal) digits too!
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Old 2018-06-21, 07:50   #1863
unconnected
 
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Nice prime, VBCurtis. Welcome to the club!
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Old 2018-06-21, 22:27   #1864
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After milion nines:)

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Quote:
Originally Posted by VBCurtis View Post
13*2^4333087-1 is prime. 1304391 digits.

My first over 4 million.

Nice, very nice prime!
Congratulations
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Old 2018-06-25, 19:46   #1865
paulunderwood
 
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Congrats to Michael aka VBCurtis on finding the 2,057,890 digit prime, 127*2^6836153-1:

http://primes.utm.edu/primes/page.php?id=125404

For how long have you been testing k=127?

Last fiddled with by paulunderwood on 2018-06-25 at 19:58
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Old 2018-06-25, 22:39   #1866
VBCurtis
 
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Well, it's not confirmed yet...

I've run k=127 for many years; ten or so, I would guess. Since ~1M, I don't quite recall.

The machine that made the discovery is a friend's office computer; it was found last August, but I only check the machine once a year or so. Whoops!

Edit: I went and found the post: April 2007, from 1M up. http://mersenneforum.org/showpost.ph...&postcount=565

Last fiddled with by VBCurtis on 2018-06-25 at 22:42
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Old 2018-06-26, 05:04   #1867
paulunderwood
 
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Quote:
Originally Posted by VBCurtis View Post
Well, it's not confirmed yet...
It is now. Congrats!

Quote:
I've run k=127 for many years; ten or so, I would guess. Since ~1M, I don't quite recall.

The machine that made the discovery is a friend's office computer; it was found last August, but I only check the machine once a year or so. Whoops!

Edit: I went and found the post: April 2007, from 1M up. http://mersenneforum.org/showpost.ph...&postcount=565
Your perseverance paid off!
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Old 2018-07-07, 23:38   #1868
Kosmaj
 
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Hi Curtis,

Congrats on great primes!

13*2^4333087-1
127*2^6836153-1
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Old 2018-08-03, 08:45   #1869
Thomas11
 
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From our 7th drive:

2415*2^1801615-1 (542344 digits)
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Old 2018-08-13, 08:31   #1870
Thomas11
 
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265*2^2051155-1 (617462 digits)
217*2^2092673-1 (629960 digits)
215*2^2131988-1 (641795 digits)
241*2^2135279-1 (642786 digits)
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