Search found 7 matches

by whatteaux
Sun Feb 02, 2020 11:18 pm
Forum: Clarifications on Project Euler Problems
Topic: problem 065
Replies: 33
Views: 10768

Re: problem 065

jaap wrote: Fri Jan 31, 2020 12:44 pm But it is surprising that e's continued fraction has a pattern to it at all.
Did you mmean Pi, rather than e? E's has a pattern (as shown in this thread), whereas Pi's is patternless.
by whatteaux
Mon Aug 19, 2019 2:25 am
Forum: Clarifications on Project Euler Problems
Topic: Problem 114
Replies: 12
Views: 4907

Re: Problem 114

Alobar wrote: Fri Aug 16, 2019 11:46 pm Could someone tell me if the answer for a length of 13 is 305, so I can at least know if I'm doing it correctly by hand, before I spend an ungodly amount of time trying higher lengths
305 is correct for a length of 13.
by whatteaux
Sun Mar 05, 2017 11:18 pm
Forum: Clarifications on Project Euler Problems
Topic: Problem 148
Replies: 16
Views: 7346

Re: Problem 148

As you have guessed, the problem is almost certainly something to do with numerical accuracy with the higher numbers. I don't use python much, so can't help you much with number storage limitations and overflows in that language, but that is likely to be the area to look at. Firstly, Python has no ...
by whatteaux
Mon Jan 09, 2017 12:11 am
Forum: Clarifications on Project Euler Problems
Topic: Problem 129
Replies: 13
Views: 5220

Re: Problem 129

The problem requires that GCD(n,1) = 1, but GCD(16,10) != 1, so we shouldn't be considering n = 16 at all. That's why the first relevant value is 17 - GCD(17,10) = 1.
by whatteaux
Mon Oct 19, 2015 1:06 am
Forum: Clarifications on Project Euler Problems
Topic: Problem 177
Replies: 26
Views: 14919

Re: Problem 177

It is easy to see how to generalise this get all 45 solutions that are a kite and cyclic. I'm also struggling with this one (but have too many, not too few!). Cyclic? Why cyclic? For example, how about a quad with angles {8,170,1,4,5,86,85,1} which meets the requirements but isn't cyclic? Or {30,30...
by whatteaux
Fri Sep 25, 2015 1:29 am
Forum: Number Theory
Topic: Set of natural numbers
Replies: 2
Views: 7018

Re: Set of natural numbers

So you want someone to just hand you the answer to problem 142, do you?
by whatteaux
Thu Nov 22, 2012 10:01 pm
Forum: Clarifications on Project Euler Problems
Topic: Problem 187
Replies: 9
Views: 4659

Re: Problem 187

If your idea is based on counting semi-primes, it's probably wrong. 12 is not a semi-prime, but it does have exactly 2 prime factors. This makes it even more confusing. The title of the problem is "Semi-primes" (the text that pops up when I hover over it in the 'progress' view). In the example give...