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  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

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#1 Re: Help Me ! » Finding algebraic factors of (2^n)+-1 » 2007-12-19 05:18:13

what i want to know is there any more method of factoizing them

#2 Re: Help Me ! » Finding algebraic factors of (2^n)+-1 » 2007-12-17 01:24:06

no i mean like (2^2n)-1 = ((2^n)-1)*((2^n)+1)

#3 Help Me ! » Finding algebraic factors of (2^n)+-1 » 2007-12-16 08:07:23

henryzz
Replies: 5

what are the methods for finding algebraic factors of (2^n)+-1

#4 Re: Help Me ! » fast fourier transform » 2007-07-23 21:16:55

thanks can someone else find something more

#5 Help Me ! » fast fourier transform » 2007-07-13 01:23:35

henryzz
Replies: 2

my dad is writing an unlimited digit integer
he cant understand how to use the fast fourier transform method to do arithmatic
he has a A level in maths could someone explain or find a website that explains it for his level

#6 Re: Puzzles and Games » Primes » 2007-07-06 07:37:29

i have worked out all the primes up to 200million in the past
can anyone find a foctorizer that goes to 2^64

#7 Re: Maths Is Fun - Suggestions and Comments » Spam » 2007-06-25 06:26:53

what can we do to make our guests sign up
we usually have over 50 guests and very few regestered people

#8 Re: Maths Is Fun - Suggestions and Comments » Spam » 2007-06-25 03:59:40

currently we basically have a board for puzzles
there is nothing being continuously answered really
i mean things like count to 1000, war of the world

#9 Maths Is Fun - Suggestions and Comments » Spam » 2007-06-24 05:05:01

henryzz
Replies: 10

could we have a spam section for games and spam

#10 Re: Puzzles and Games » Primes » 2007-06-23 18:35:17

223243
223247
223253
223259
223273
223277
223283
223291
223303
223313
sorry

#16 Re: Puzzles and Games » Primes » 2007-06-22 19:09:49

37 now we can at least read each other

#17 Re: Puzzles and Games » Primes » 2007-06-22 08:58:41

can we please post the number in numerals
19

#19 Re: Puzzles and Games » Primes » 2007-06-22 07:01:52

if we r going to do that can we post the numeral and what language
7- سبعة, سبع  arabic

#20 Re: Euler Avenue » Number Giants » 2007-06-22 06:49:21

my number 10!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

work that out!!!

#21 Re: Puzzles and Games » The Battle Of Hastings. » 2007-06-22 06:16:14

pell's equation is X² - d × Y² = ± 1 not y²=(dx²)+1
i have tried transposing terms and i get X² =dY² ± 1 which is just x and y swapped except that it is ±1 instead of +1
this puzzle's equation is

#22 Re: Puzzles and Games » Primes » 2007-06-22 05:59:57

yes it is just a time waster really there is no section for that
in the past i have only got to about 200 so i want to see how high we can get here

#23 Puzzles and Games » Primes » 2007-06-22 05:34:58

henryzz
Replies: 55

Post the next prime lets see how high we can get.

2

#24 Re: Puzzles and Games » The Battle Of Hastings. » 2007-06-22 05:14:52

that answers 61 and 97
i have now worked out up to 300 except for things i cant find
what i want is a list showing what the anwer to each number is
this was a puzzle written by Arcamedis and later written about by Dudeney it is not a literal battle

#25 Re: Puzzles and Games » The Battle Of Hastings. » 2007-06-21 06:40:03

it was a perfect square
the army bit is just to make it a more fun puzzle
when will i get solutions

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