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Forum: Programming

2018-05-28, 13:57

Replies: 2

Mersenne prime number search algorithm

Views: 1,353

Posted By irina

Mersenne prime number search algorithm

1. var k,l,n,s,j,d,c,y,r,x,i,h:biginteger;
begin
x:=31;
i:=32;
h:=1;
for var q:=1 to 100 do
begin
var a:=x div 2;
var b:=a-1;
repeat

Forum: Programming

2018-05-28, 13:55

Replies: 0

algorithm for factoring a number into two factors

Views: 1,262

Posted By irina

algorithm for factoring a number into two factors

var k,l,n,s,j,d,c,y,r,b:biginteger;
begin
var x:=ReadString('введите число:').ToBigInteger;
var a:=x div 2;
repeat
b:=a;
a:=(a+x div a)div 2
until a>=b;
s:=a;
n:=x-sqr(s);

Forum: Programming

2018-05-28, 13:50

Replies: 6

Algebraithm for calculating primes

Views: 2,544

Posted By irina

Mersenne prime number search algorithm

?

Forum: Programming

2015-07-11, 14:54

Replies: 6

Algebraithm for calculating primes

Views: 2,544

Posted By irina

Algebraithm for calculating primes

For prime number A, there is only one value B, such that what А + В2 = С2
В = (А-1)/2
С = (А+1)/2
А = С2 – В2 = (С-В)*(С+В)
С – В = 1
If the number of semiprime A = k1 * k2, then there are at...

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