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Forum: sweety439 2020-12-04, 20:54
Replies: 23
Views: 627
Posted By sweety439
Other pages for twin primes of the form k*2^n-1...

Other pages for twin primes of the form k*2^n-1 and k*2^n+1:

http://www.noprimeleftbehind.net/gary/twins1M.htm
http://www.noprimeleftbehind.net/gary/twins100K.htm
Forum: sweety439 2020-12-04, 20:53
Replies: 91
Views: 6,341
Posted By sweety439
the newest PDF page, include the (probable) prime...

the newest PDF page, include the (probable) prime (51*21^479149-1243)/4 (https://cs.uwaterloo.ca/~cbright/talks/minimal-slides.pdf)
Forum: sweety439 2020-12-04, 20:51
Replies: 91
Views: 6,341
Posted By sweety439
the old PDF page for bases 2 to 10...

the old PDF page for bases 2 to 10 (https://scholar.colorado.edu/downloads/hh63sw661)
Forum: Conjectures 'R Us 2020-12-04, 13:57
Replies: 113
Views: 19,618
Posted By sweety439
For the Sierpinski table, you can include...

For the Sierpinski table, you can include 4*32^n+1 with test limit 1717986917 in the table, like 4*53^n+1 with test limit 1670000, since both these two forms possible have a prime, unlike forms...
Forum: Factoring 2020-12-02, 19:40
Replies: 15
Views: 1,793
Posted By sweety439
minus This site misses 154 digits. MODERATOR...

This site misses 154 digits.

MODERATOR CAUTION: Please stop posting inane "observations" like this. Like the next poster, and many other users, I am sick of them.

I am sure the people running...
Forum: sweety439 2020-12-02, 18:55
Replies: 91
Views: 6,341
Posted By sweety439
O{L}Z at 68945 Ls {P}SZ at 66001 Ps both...

O{L}Z at 68945 Ls
{P}SZ at 66001 Ps

both no (probable) prime found
Forum: sweety439 2020-12-02, 18:52
Replies: 23
Views: 627
Posted By sweety439
The link is now...

The link is now https://github.com/xayahrainie4793/minimal-primes-and-left-right-truncatable-primes
Forum: sweety439 2020-12-02, 18:52
Replies: 91
Views: 6,341
Posted By sweety439
The GitHub link for minimal primes and left...

The GitHub link for minimal primes and left truncatable primes and right truncatable primes is now https://github.com/xayahrainie4793/minimal-primes-and-left-right-truncatable-primes
Forum: sweety439 2020-12-02, 18:50
Replies: 91
Views: 6,341
Posted By sweety439
The link moves to...

The link moves to https://raw.githubusercontent.com/xayahrainie4793/minimal-primes-and-left-right-truncatable-primes/master/kernel60.txt
Forum: sweety439 2020-12-02, 18:47
Replies: 91
Views: 6,341
Posted By sweety439
where A=10, B=11, C=12, ... and "SUB" tag...

where A=10, B=11, C=12, ...

and "SUB" tag means repeating digits, e.g. 1234567 = 123333567
Forum: Abstract Algebra & Algebraic Number Theory 2020-12-02, 16:26
Replies: 8
Views: 348
Posted By sweety439
Yes, I want to let more people know this...

Yes, I want to let more people know this conjecture, as Riemann hypothesis and abc conjecture and Schinzel's hypothesis H

This conjecture would imply all Sierpinski conjectures...
Forum: Lounge 2020-12-02, 14:27
Replies: 13
Views: 366
Posted By sweety439
You can convert to base 88, with A0=0, Bb0=1,...

You can convert to base 88, with A0=0, Bb0=1, B0=2, C1=3, C#1=4, D1=5, ..., B7=86, C8=87
Forum: sweety439 2020-12-02, 14:14
Replies: 1,113
Views: 43,403
Posted By sweety439
Conjecture: For any integer triple (k,b,c) (k>=1,...

Conjecture: For any integer triple (k,b,c) (k>=1, b>=2, c != 0, gcd(k,c) = 1, gcd(b,c) = 1) such that (k*b^n+1)/gcd(k+1,b-1) cannot be ruled out (by full numerical covering set, or by full algebraic...
Forum: sweety439 2020-12-02, 12:34
Replies: 91
Views: 6,341
Posted By sweety439
O{L}Z at 67946 L's {P}SZ at 65187 P's both...

O{L}Z at 67946 L's
{P}SZ at 65187 P's

both no (probable) prime found
Forum: sweety439 2020-12-01, 21:37
Replies: 1
Views: 62
Posted By sweety439
1021*2^n+1

Is 112 the only number n such that 1021*2^n+1 is prime?

Besides, if 47*2^a+1 and 383*2^b+1 are both primes, then a<b, is this true?
Forum: Math 2020-12-01, 21:23
Replies: 3
Views: 1,656
Posted By sweety439
There are no primes in this sequence, since...

There are no primes in this sequence, since 32^n-1 = (2^n-1) * (16^n+8^n+4^n+2^n+1), and since the two factors are both >31 for n>5 ((32^n-1)/31 is not prime for all 1<=n<=5), thus the factorization...
Forum: Prime Wiki 2020-12-01, 21:19
Replies: 39
Views: 310
Posted By sweety439
2*773^n+1, 8*773^n+1, and 10*773^n+1 at n=220K,...

2*773^n+1, 8*773^n+1, and 10*773^n+1 at n=220K, all no prime found, see CRUS page (http://www.noprimeleftbehind.net/crus/Sierp-conjectures.htm)
Forum: Prime Wiki 2020-12-01, 21:18
Replies: 39
Views: 310
Posted By sweety439
Exclamation Do not post your results here!

8*328^n-1 at n=1M with no prime found (https://mersenneforum.org/showpost.php?p=564968&postcount=2208)
Forum: sweety439 2020-12-01, 19:32
Replies: 23
Views: 627
Posted By sweety439
Another link for right-truncatable primes:...

Another link for right-truncatable primes: http://www.primerecords.dk/left-truncatable.htm
Forum: Riesel Prime Search 2020-12-01, 19:05
Replies: 217
Views: 30,463
Posted By sweety439
this number is now proven to be prime, now there...

this number is now proven to be prime, now there are 47 Riesel base 2 candidate left.
Forum: FactorDB 2020-12-01, 19:04
Replies: 128
Views: 21,042
Posted By sweety439
Now, can Primo be run in Windows 10?

Now, can Primo be run in Windows 10?
Forum: sweety439 2020-12-01, 18:30
Replies: 91
Views: 6,341
Posted By sweety439
The "minimal prime problem" is solved only in...

The "minimal prime problem" is solved only in bases 2~16, 18, 20, 22~24, 30, 42, 60


b, length of largest minimal prime base b, number of minimal primes base b
2, 2, 2
3, 3, 3
4, 2, 3
5, 5, 8...
Forum: sweety439 2020-12-01, 18:22
Replies: 91
Views: 6,341
Posted By sweety439
reserve the only two unsolved families in base 36...

reserve the only two unsolved families in base 36 (O{L}Z and {P}SZ), started with n=49K (double checked 49K-50K)
Forum: Abstract Algebra & Algebraic Number Theory 2020-12-01, 16:05
Replies: 8
Views: 348
Posted By sweety439
No, it is just a typo, should be "expected"...

No, it is just a typo, should be "expected" ....
Forum: Software 2020-11-30, 08:23
Replies: 4
Views: 221
Posted By sweety439
This k is too large (>2^32), thus sr2sieve cannot...

This k is too large (>2^32), thus sr2sieve cannot handle, like that sr2sieve cannot handle the sequence (k*b^n+c)/gcd(k+c,b-1) (k>=1, b>=2, c != 0, gcd(k,c) = 1, gcd(b,c) = 1) such that gcd(k+c,b-1)...
Showing results 1 to 25 of 1000

 
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