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Posted: 1/15/2006 10:28:33 PM EDT
The RSA Challenge Numbers

$200,000 Prize is Offered for Factoring:

25195908475657893494027183240048398571429282126204
03202777713783604366202070759555626401852588078440
69182906412495150821892985591491761845028084891200
72844992687392807287776735971418347270261896375014
97182469116507761337985909570009733045974880842840
17974291006424586918171951187461215151726546322822
16869987549182422433637259085141865462043576798423
38718477444792073993423658482382428119816381501067
48104516603773060562016196762561338441436038339044
14952634432190114657544454178424020924616515723350
77870774981712577246796292638635637328991215483143
81678998850404453640235273819513786365643912120103
97122822120720357

Any Takers?
Link Posted: 1/15/2006 10:57:38 PM EDT
[#1]


Yep, let me try...
Damn, not divisible by two.  Never mind.
Link Posted: 1/15/2006 11:01:04 PM EDT
[#2]
Okay, I'll start....

1 and

25195908475657893494027183240048398571429282126204
03202777713783604366202070759555626401852588078440
69182906412495150821892985591491761845028084891200
72844992687392807287776735971418347270261896375014
97182469116507761337985909570009733045974880842840
17974291006424586918171951187461215151726546322822
16869987549182422433637259085141865462043576798423
38718477444792073993423658482382428119816381501067
48104516603773060562016196762561338441436038339044
14952634432190114657544454178424020924616515723350
77870774981712577246796292638635637328991215483143
81678998850404453640235273819513786365643912120103
97122822120720357

Are the first two factors.
Link Posted: 1/15/2006 11:09:32 PM EDT
[#3]
87!
Link Posted: 1/15/2006 11:11:52 PM EDT
[#4]

Quoted:
Okay, I'll start....

1 and

25195908475657893494027183240048398571429282126204
03202777713783604366202070759555626401852588078440
69182906412495150821892985591491761845028084891200
72844992687392807287776735971418347270261896375014
97182469116507761337985909570009733045974880842840
17974291006424586918171951187461215151726546322822
16869987549182422433637259085141865462043576798423
38718477444792073993423658482382428119816381501067
48104516603773060562016196762561338441436038339044
14952634432190114657544454178424020924616515723350
77870774981712577246796292638635637328991215483143
81678998850404453640235273819513786365643912120103
97122822120720357

Are the first two factors.



Oh Come On!

Its a Composite Number..

Here is a place where you can download an Executable for the Seive of Erastothenes for generating Prime Numbers www.fpx.de/fp/Software/Sieve.html which you can compile into a list to use to try to factor the number...

BTW...I Never said it would be Easy!

There are other challenges which are easier, but they are for less money...



Link Posted: 1/16/2006 12:15:48 PM EDT
[#5]
Here is a free Factoring Tool from
home.netcom.com/~jrhowell/math/factor.htm


A better factoring tool that can handle more than 2400 digits can be found at:home.netcom.com/~jrhowell/math/software.htm


Link Posted: 1/16/2006 12:42:55 PM EDT
[#6]
btt
Link Posted: 1/16/2006 12:55:42 PM EDT
[#7]
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