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• ## Mathematical Attack on RSA-2048 - Prime Factor

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• Sir, Can you please help me to find the error of this formula: See Microsoft excel file for your reference. v=Input Number
Message 1 of 1 , Oct 3, 2012
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Sir,

See Microsoft excel file for your reference.

v=Input Number

t=+IF(Control="",IF(n=1,0,IF(AND(n>1,p>1),t+1,t)),1)

p=+IF(Control="",IF(n-x*a=0,a,1),1)

n=+IF(Control="",IF(n-x*a=0,n/a,n),v)

a=+IF(AND(Control="",product<>v),IF(AND(p=1,w=0),a+1,1),1)

Product=+PRODUCT(D9:AQ9)--see excel file

x=+ROUNDDOWN(n/a,0)

w=+IF(Control="",IF((y-a)=0,1,0),1)

y=+ROUNDDOWN(SQRT(v),0)

so that i can use PrimeFactor_from Maximum Value ROUNDDOWN(SQRT(v),0) to
Minimum Value 1 only

Ex. To check the formula try to use Input number { 100,101,102}

My Project: Mathematical Attack on RSA

Name: RSA-2048
Digits: 617
Digit Sum: 2738

2519590847565789349402718324004839857142928212620403202777713783604366202070759555626401852588078440691829064124951508218929855

9149176184502808489120072844992687392807287776735971418347270261896375014971824691165077613379859095700097330459748808428401797

4291006424586918171951187461215151726546322822168699875491824224336372590851418654620435767984233871847744479207399342365848238

2428119816381501067481045166037730605620161967625613384414360383390441495263443219011465754445417842402092461651572335077870774

9817125772467962926386356373289912154831438167899885040445364023527381951378636564391212010397122822120720357

Reference:

1. http://people.revoledu.com/kardi/index.html

2. http://PrecisionCalc.com

To learn how to get started doing that, please take a couple minutes to go
through the quick-start tutorial:

http://precisioncalc.com/quick-start_tutorial.html

If you have a little more time, I recommend going through the main tutorial
too:

http://precisioncalc.com/Tutorial.html

Also see the function reference for each of the xlPrecision functions
you�ll be using:

http://precisioncalc.com/Function_Reference.html

And here�s the troubleshooting FAQ:

http://precisioncalc.com/tshoot_faq.html

Regards,

John

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