Forum: Factoring
2022-08-09, 15:59
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Replies: 24
Views: 1,514
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Forum: Factoring
2022-08-06, 03:44
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Replies: 24
Views: 1,514
I've made a program that calculates the next...
I've made a program that calculates the next number according to the rule n * d(n) / (gcd(n, d(n)) ^2), and run it for all numbers smaller or equal to 1,000,000. For every number, it calculates its...
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Forum: Miscellaneous Math
2022-07-16, 20:50
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Replies: 27
Views: 1,173
Well, it only uses division by 2, which can be...
Well, it only uses division by 2, which can be done as a right-shift, and addition and value comparing, so if it works as intended, then I believe it is much faster - at least algorithmically, as it...
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Forum: Factoring
2022-06-28, 14:46
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Replies: 24
Views: 1,514
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Forum: Charles Kusniec
2022-06-26, 23:50
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Replies: 18
Views: 630
This one is trivial. If the square number is...
This one is trivial. If the square number is even, it must be divisible by 2, and also 4, as all powers of prime divisors of squares must be even for it to be a square number. If you take a square s...
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Forum: Factoring
2022-06-21, 16:12
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Replies: 24
Views: 1,514
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Forum: Factoring
2022-06-19, 20:47
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Replies: 24
Views: 1,514
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Forum: Soap Box
2022-06-17, 16:07
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Replies: 37
Views: 1,403
I would like to defend this part a bit. In the...
I would like to defend this part a bit. In the circles of Facebook, and other social media and messaging services, it's quite common to write in a simple form and overlook occasional typos in the...
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Forum: Factoring
2022-06-13, 20:53
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Replies: 24
Views: 1,514
The conjecture originally was that these prime...
The conjecture originally was that these prime loops (p -> 2p -> 2p) are the only loops and that all numbers terminate in such a loop. @henryzz pointed out more formats (actually a pattern for...
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Forum: Factoring
2022-06-12, 10:52
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Replies: 24
Views: 1,514
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Forum: Factoring
2022-06-12, 00:58
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Replies: 24
Views: 1,514
Let me correct you.
I was explaining...
Let me correct you.
I was explaining my improved version of the original rule for the sequence. Thus 75 goes to 50. At least in my version, that is.
75 = 3 * 5^2, that is 6 divisors, 6 = 2...
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Forum: Factoring
2022-06-11, 00:28
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Replies: 24
Views: 1,514
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Forum: Factoring
2022-06-10, 23:56
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Replies: 24
Views: 1,514
For a moment I thought about using only the...
For a moment I thought about using only the proper divisors, but this lead me very quickly to a realization of a problem with primes, which would then have only 1 divisor.
These number series are...
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Forum: PrimeNet
2022-06-01, 21:41
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Replies: 101
Views: 49,546
Yep, one of our internet providers here in...
Yep, one of our internet providers here in Slovakia, specifically the one I use, is a great example of this. When you call their tech support line before you are even allowed to talk to the robot to...
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Forum: Lounge
2022-06-01, 17:25
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Replies: 30
Views: 2,389
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Forum: Software
2022-05-28, 14:05
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Replies: 5
Views: 424
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Forum: Miscellaneous Math
2022-05-14, 11:07
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Replies: 580
Views: 76,710
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Forum: Lounge
2022-05-13, 13:20
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Replies: 25
Views: 4,252
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Forum: Hardware
2022-05-11, 19:33
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Replies: 876
Views: 214,632
I was thinking about the effect of memory...
I was thinking about the effect of memory bandwidth as a bottleneck for the performance of a GPU or a CPU. I thought about and tried to calculate the amount of bandwidth needed for 1 TFLOPS of FP64...
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Forum: GPU Computing
2022-05-07, 21:15
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Replies: 375
Views: 99,934
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Forum: Data
2022-04-17, 20:21
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Replies: 1,409
Views: 191,561
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Forum: GPU Computing
2022-03-23, 22:18
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Replies: 6
Views: 1,074
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Forum: Science & Technology
2022-03-23, 21:51
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Replies: 3,016
Views: 324,202
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Forum: Lone Mersenne Hunters
2022-02-17, 18:06
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Replies: 2,173
Views: 336,798
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Forum: Lounge
2022-01-22, 13:03
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Replies: 98
Views: 32,760
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