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Forum: Miscellaneous Math 2019-08-21, 02:11
Replies: 3
Views: 296
Posted By wblipp
This article...

This article (http://myreckonings.com/wordpress/2011/10/05/the-13th-root-of-a-100-digit-number-part-i/) says it has pictures of the 73rd root demonstration. I think the top picture is the 500+ digit...
Forum: Miscellaneous Math 2019-08-21, 01:33
Replies: 3
Views: 308
Posted By wblipp
See Dickman–de Bruijn function in Wikipedia...

See Dickman–de Bruijn function in Wikipedia (https://en.wikipedia.org/wiki/Dickman_function), Wolfram (http://mathworld.wolfram.com/DickmanFunction.html) and elsewhere.
Forum: Miscellaneous Math 2019-08-21, 01:26
Replies: 3
Views: 296
Posted By wblipp
According to this ...

According to this (http://stepanov.lk.net/mnemo/mkleine.html), it was a 507 digit number, which puts the root between 8540964 and 8814658 inclusive.
Forum: Factoring 2019-05-25, 00:12
Replies: 14
Views: 1,223
Posted By wblipp
I just now looked, and the name does not expire...

I just now looked, and the name does not expire until December; Perhaps I should renew it and share it with you - perhaps let you have lib.oddperfect.org or something like that. It would keep my...
Forum: ElevenSmooth 2019-05-08, 01:54
Replies: 3
Views: 10,682
Posted By wblipp
I lost interest in maintaining the site and let...

I lost interest in maintaining the site and let the domain name expire.
Forum: Miscellaneous Math 2019-04-15, 23:42
Replies: 37
Views: 1,318
Posted By wblipp
Now would be a good time to step back and try to...

Now would be a good time to step back and try to understand why nothing is working. You have successfully shown "there must be at least one prime outside of previous consideration" several times. ...
Forum: Miscellaneous Math 2019-04-15, 15:03
Replies: 37
Views: 1,318
Posted By wblipp
Looking good to here. Ooops. This...

Looking good to here.



Ooops. This means at least one prime (p) exists beyond those in the list. But why must it be a twin prime?
Forum: enzocreti 2019-04-15, 13:34
Replies: 2
Views: 197
Posted By wblipp
The squares get sparse much faster than the...

The squares get sparse much faster than the primes, so once you get out of the very small numbers, there are going to many primes between adjacent squares. There are 23 primes between (100)^2 and...
Forum: Miscellaneous Math 2019-04-15, 13:26
Replies: 37
Views: 1,318
Posted By wblipp
I'm with you this far. But I lost you...

I'm with you this far.



But I lost you here, There are lots of primes that are not twin primes. Why is it impossible that Q is a product of only these non-twin primes?
Forum: Miscellaneous Math 2019-04-14, 18:03
Replies: 37
Views: 1,318
Posted By wblipp
But not all primes are in S. Could Q be...

But not all primes are in S. Could Q be divisible by one or more of those other primes?
Forum: enzocreti 2019-04-11, 01:14
Replies: 3
Views: 206
Posted By wblipp
2, 3, 7, 229, 1579

2, 3, 7, 229, 1579
Forum: Factoring 2019-04-10, 11:55
Replies: 14
Views: 1,223
Posted By wblipp
I'm still around, but haven't had the interest to...

I'm still around, but haven't had the interest to update OPN for a few years. When the domain name came up for renewal I let it expire.
Forum: jvang 2019-04-05, 01:41
Replies: 107
Views: 8,965
Posted By wblipp
Have you learned Sigma notation yet? If so, you...

Have you learned Sigma notation yet? If so, you should be able to use it to write an expression for the sum of the first n odd numbers.

Have you learned inductive proofs yet? If so, you should...
Forum: Software 2019-04-02, 16:21
Replies: 38
Views: 2,137
Posted By wblipp
The Luke Richards Hobby Project

I was tickled by the idea of a 50 year hobby project and curious about whether continuing trends for 50 years might by sufficient or if algorithmic improvements would be needed to beat the heat death...
Forum: Software 2019-03-17, 22:42
Replies: 38
Views: 2,137
Posted By wblipp
You should also consider a P+1 proof. 3504206+3...

You should also consider a P+1 proof. 3504206+3 = 3504207+1 (http://factordb.com/index.php?id=1100000001270038807), which also has algebraic factors. Although also unlikely to factor, this side...
Forum: Puzzles 2019-03-07, 22:12
Replies: 6
Views: 819
Posted By wblipp
I agree with ATH's calculation of average time...

I agree with ATH's calculation of average time from First Monday to Second Tuesday. How much longer is it to Second Wednesday?
Forum: Puzzles 2019-03-05, 23:54
Replies: 6
Views: 819
Posted By wblipp
Monday to Tuesday

This is really too simple for the puzzles section, but I think others might enjoy it.

My local gym has a monthly offering of "Pizza on the first Monday" and "Coffee and Bagels on the second...
Forum: Lounge 2019-02-18, 23:26
Replies: 11
Views: 605
Posted By wblipp
I was right about analytic continuation, but not...

I was right about analytic continuation, but not the cheat for 1+1+1 ... = -1/2

Wikipedia has reasonable starting point (https://en.wikipedia.org/wiki/1_%2B_1_%2B_1_%2B_1_%2B_%E2%8B%AF)

And...
Forum: Lounge 2019-02-18, 22:10
Replies: 11
Views: 605
Posted By wblipp
x = (1+1+1....) 1+x = 1+(1+1+1+1) = x 2x =...

x = (1+1+1....)
1+x = 1+(1+1+1+1) = x
2x = -1

Ramanujan and others, I think. If I recall correctly, you can get to a reasonable interpretation through analytic continuation.

oops. as...
Forum: Miscellaneous Math 2019-02-09, 22:56
Replies: 40
Views: 1,628
Posted By wblipp
I can't tell you if agree with my three points or...

I can't tell you if agree with my three points or if you have failed to read them.
Forum: Miscellaneous Math 2019-02-08, 20:56
Replies: 40
Views: 1,628
Posted By wblipp
Just to be sure we are on the same page: 1. you...

Just to be sure we are on the same page:
1. you feel that it is obvious that if the set is finite, there must be a last element of the Eratosthenes Sieve.
2. I have shown a different problem where...
Forum: Miscellaneous Math 2019-02-07, 17:21
Replies: 40
Views: 1,628
Posted By wblipp
I would like to convince you that this is wrong. ...

I would like to convince you that this is wrong. I hope to do this by showing a set of prime candidates that contain no primes, but which the Sieve of Eratosthenes cannot eliminate "all at once." ...
Forum: Miscellaneous Math 2019-02-01, 16:35
Replies: 40
Views: 1,628
Posted By wblipp
I've given this a little thought, but I don't see...

I've given this a little thought, but I don't see why there would have to be such a special prime. Why couldn't it be that at every step of the sieve there are always some pairs left, but they are...
Forum: jvang 2018-12-10, 14:43
Replies: 171
Views: 8,361
Posted By wblipp
The usual method to show this is to assume there...

The usual method to show this is to assume there exists a one-to-one relationship between the positive integers and the real numbers between 0 and 1 - so there is a listing of the the first, second,...
Forum: FactorDB 2018-10-05, 21:10
Replies: 1,616
Views: 120,009
Posted By wblipp
The displayed results for the N-1 factorization...

The displayed results for the N-1 factorization claim to be FF, but it is missing 3^524. I'm guessing that error gums up the works someplace.
Showing results 1 to 25 of 1000

 
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