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Old 2018-01-16, 02:59   #155
paulunderwood
 
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Congrats to Serge for two Sophie Germain pairs:

10429091973*2^135135-1
10429091973*2^135136-1

13375563435*2^137136-1
13375563435*2^137137-1

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Old 2018-04-12, 19:22   #156
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After milion nines:)

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And another near-repdigit prime

http://primes.utm.edu/primes/page.php?id=124582

92*10^833852-1 is prime!

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Old 2018-09-07, 20:49   #157
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31521*2^1778899-1 (before 3 years) and today 663251*2^1778899+1 :)
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Old 2018-10-11, 13:53   #158
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And today



84256*3^1778899+1 is prime! (848756 decimal digits) Time : 1329.140 sec.
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Old 2018-10-13, 00:28   #159
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After day and half
45472 *3^1778899-1 is prime!

Now I have "pair" on base 2 and base 3
Hunt for primes on base 5 has started
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Old 2019-01-28, 13:21   #160
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Verification of new mega repdigit prime is started :)
But I am pretty sure it will be confirmed :)
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Old 2019-01-28, 20:42   #161
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https://primes.utm.edu/primes/page.php?id=125948


93 · 10^1029523-1 is prime


After nearly 2.5 years from my last mega ( also ) near-repdigit prime


From last mega prime to this mega prime I process only 9284 candidates :)
If we take some average number of candidates for one mega prime (38000 on 1e15 as sieve depth) , I was very lucky since I found two in this range.

Last fiddled with by pepi37 on 2019-01-28 at 21:07 Reason: add more info
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Old 2019-01-30, 13:56   #162
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Quote:
Originally Posted by pepi37 View Post
https://primes.utm.edu/primes/page.php?id=125948


93 · 10^1029523-1 is prime


After nearly 2.5 years from my last mega ( also ) near-repdigit prime


From last mega prime to this mega prime I process only 9284 candidates :)
If we take some average number of candidates for one mega prime (38000 on 1e15 as sieve depth) , I was very lucky since I found two in this range.
Congrats on the occasion of finding a new near-repdigit mega-prime
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Old 2019-01-30, 14:25   #163
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Quote:
Originally Posted by paulunderwood View Post
Congrats on the occasion of finding a new near-repdigit mega-prime
Thanks
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Old 2019-02-15, 01:39   #164
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Congrats Serge and Ryan for the 1,533,936 digit Near-repdigit prime:

992*10^1533933 - 1

Last fiddled with by paulunderwood on 2019-02-15 at 01:40
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Old 2019-02-15, 02:23   #165
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But wait...!
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