Forum: Homework Help
2021-02-18, 20:54
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Replies: 8
Views: 397
This might be what you want:
The expected...
This might be what you want:
The expected number of primes between 10a and 10b is ln( a/b ). Also true when replacing "10" with any other base. Now offline, but the wayback machine shows this...
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Forum: Abstract Algebra & Algebraic Number Theory
2020-10-16, 06:59
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Replies: 2
Views: 1,587
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Forum: Math
2020-10-10, 04:54
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Replies: 2
Views: 816
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Forum: Miscellaneous Math
2019-08-21, 02:11
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Replies: 3
Views: 590
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...
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Forum: Miscellaneous Math
2019-08-21, 01:33
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Replies: 3
Views: 587
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Forum: Miscellaneous Math
2019-08-21, 01:26
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Replies: 3
Views: 590
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.
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Forum: Factoring
2019-05-25, 00:12
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Replies: 14
Views: 1,964
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Forum: ElevenSmooth
2019-05-08, 01:54
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Replies: 3
Views: 19,943
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Forum: Miscellaneous Math
2019-04-15, 23:42
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Replies: 37
Views: 2,630
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Forum: Miscellaneous Math
2019-04-15, 15:03
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Replies: 37
Views: 2,630
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Forum: enzocreti
2019-04-15, 13:34
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Replies: 2
Views: 510
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...
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Forum: Miscellaneous Math
2019-04-15, 13:26
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Replies: 37
Views: 2,630
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?
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Forum: Miscellaneous Math
2019-04-14, 18:03
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Replies: 37
Views: 2,630
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Forum: enzocreti
2019-04-11, 01:14
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Replies: 3
Views: 580
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Forum: Factoring
2019-04-10, 11:55
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Replies: 14
Views: 1,964
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Forum: jvang
2019-04-05, 01:41
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Replies: 107
Views: 20,165
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Forum: Software
2019-04-02, 16:21
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Replies: 38
Views: 3,557
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...
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Forum: Software
2019-03-17, 22:42
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Replies: 38
Views: 3,557
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Forum: Puzzles
2019-03-07, 22:12
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Replies: 6
Views: 1,319
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Forum: Puzzles
2019-03-05, 23:54
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Replies: 6
Views: 1,319
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...
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Forum: Lounge
2019-02-18, 23:26
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Replies: 11
Views: 994
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Forum: Lounge
2019-02-18, 22:10
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Replies: 11
Views: 994
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...
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Forum: Miscellaneous Math
2019-02-09, 22:56
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Replies: 40
Views: 2,527
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Forum: Miscellaneous Math
2019-02-08, 20:56
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Replies: 40
Views: 2,527
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...
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Forum: Miscellaneous Math
2019-02-07, 17:21
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Replies: 40
Views: 2,527
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