
View Poll Results: What about This app you like it?  
Yes  4  36.36%  
No  3  27.27%  
Regular  1  9.09%  
Very bad  3  27.27%  
Voters: 11. You may not vote on this poll 

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20190103, 19:26  #23  
P90 years forever!
Aug 2002
Yeehaw, FL
2^{3}×1,021 Posts 
Quote:
Congratulations on creating a working LucasLehmer test program. I hope you have found the experience enjoyable and informative. The skepticism here is no reflection on you personally. There are two reasons your announcement has not received the enthusiasm you hoped for. 1) The processor in a phone is not powerful enough to contribute to the search for new Mersenne primes. 2) People here are reluctant to download *any* software from the Internet. Instead, I suggest posting your code. Members here can suggest improvements or marvel at your ingenuity. 

20190103, 19:28  #24 
Jan 2019
43 Posts 
in play store a app called lucas lehmer its for android very very slow. this app its about twenty times more faster.

20190103, 19:36  #25  
"Forget I exist"
Jul 2009
Dartmouth NS
2·3·23·61 Posts 
Quote:
https://robbell.net/2009/06/abegin...igonotation/ 

20190103, 19:44  #26  
"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest
2·3,691 Posts 
Quote:
What are its exponent limits versus phone memory size or other parameters? https://www.mersenneforum.org/showpo...91&postcount=2 Last fiddled with by kriesel on 20190103 at 19:49 

20190103, 20:18  #27 
"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest
2×3,691 Posts 
Since my grasp of Spanish is almost nonexistent, I keyed in an AmericanEnglishkeyboard approximation of the first screen shot, ran it through Google Translate, and got:
Code:
MvIiIaX  Mersenne Cousins Numbers Calculation  MvIiIaX The Mersenne Prime Numbers, Are Numbers Cousins Such That ... 2 ^ n1 is a Prime Number, n Being Cousin. Example: If We Give An Interval From 0 To 10000 When n Be 9973 We Will Obtain A Number Of Some 3003 Digits To Analyze And See If It Is A Prime Number Or No. The Mersenne Prime Numbers Are Represented As: M2, M3, M5, M7, M13, M17, M19 ... M82589933 That's the 51st Mersenne Prime Number Calculated By January 2019, Which Has More Than 24 Million Digits, Much Much Calculation. The purpose of this program is mathematical and Benchmark mode in a given interval, for these calculations it takes much more power than a mobile gives to January 2019, although you will know ... within a few years this program to be surprised ... At the end of the calculation, the program will give us a rate of volume, this rate of speed of your mobile generating cousins of Mersenne, will have a maximum of 100 points, the higher you are, the more powerful your mobile, for example a S4 Mini Year 2013, Gives An Index Of 0.176 Points, Calculating From 0 To 10000 Of Exponent,? And yours ?. You Can Serve In Way Of BenchMark In Your Mobile Equipment Or To Compete With Your Friends ... To See Who Has The Best Mobile. This Program Does Intensive Use Of The CPU, So The Quicker It Is, The Quicker The Calculations ... The File M8AX  Mersenne.TXT Will Be Created With The Results Of The Calculations In The Folder In Which You Execute The Program. Enter the Exponent from which the calculations will start. 0 Enter The Exponent In Which The Calculations Will End. 10000 Anybody know what "MvIiIaX" is? Last fiddled with by kriesel on 20190103 at 20:22 
20190103, 20:38  #28 
"Carlos Pinho"
Oct 2011
Milton Keynes, UK
2^{2}×1,283 Posts 
I thought your second language learnt at school was Spanish.

20190103, 20:51  #29 
"Forget I exist"
Jul 2009
Dartmouth NS
20342_{8} Posts 

20190103, 21:00  #30  
"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest
2·3,691 Posts 
Run time scaling from Thorken's posts
Quote:
~p^{2.45}, about a century for M(82859933) from a very long extrapolation made from only 3 data points and limited precision. What I've seen for other codes range from 2.03 up. 2+ is the minimum, One for iteration count, one for operand size, plus a bit of change for fewer bits/word in the fft transform at larger sizes. Or n * n log n log log n. CUDALucas 2.094, prime95 2.094. https://www.mersenneforum.org/showpo...78&postcount=2 https://www.mersenneforum.org/showpo...23&postcount=2 (Folks in the know, don't take that as talking down to you. It's for those looking up at the learning curve still ahead.) Quote:
Last fiddled with by kriesel on 20190103 at 21:59 

20190103, 21:13  #31 
"Vincent"
Apr 2010
Over the rainbow
B44_{16} Posts 
no need for 'burner' phone.. there are android emulator out there...( well for windows at least)
Bluestack, Memu,LDplayer, Andy and Nox. Since I have a dumbphone, if I want to play some mobile game, I have to use an emulator. I personnally prefer bluestack. Last fiddled with by firejuggler on 20190103 at 21:18 
20190103, 22:13  #32  
∂^{2}ω=0
Sep 2002
República de California
5×2,351 Posts 
Quote:
I also notice that your runtime for 216091 is more than 7x that for 86243, which is somewhat above the O(n^2 log n) scaling one expects from a fasttransformbased largeintegermultiply algorithm. What algorithm are you using for the modular mutiply needed by the LL test? Last fiddled with by ewmayer on 20190103 at 22:19 

20190103, 22:32  #33 
Einyen
Dec 2003
Denmark
19×181 Posts 
The smallest exponent needed for the project is around M47,000,000 for double checking.
If it takes 23 min for M216091 it will take months / years for those exponents if the phone can handle them at all. Also consider that this project have been running for 23 years! since january 1996. It is very unlikely anyone just joining the project can come up with something ground breaking that no one else thought about in all those years. A few very intelligent and clever people have made huge changes and contributions to this project over the years, but I do not think any of them had just joined when they did it. To quote an old man you may or may not know: "Stay awhile and listen..." Last fiddled with by ATH on 20190103 at 22:40 
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