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196 AND OTHER LYCHREL NUMBERS

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Welcome to p196.org!

By now, I've drilled it into your head that there are more numbers than 196 that are called Lychrel Numbers. There are also other people as crazy, addicted, motivated, persistent and interested as I am, who wonder about these numbers, and have taken it upon themselves to follow the same "brute force" method for finding a palindrome as I have. This page was developed to credit those other brave souls who are burning CPU cycles on other numbers...

NOTE: Unlike my 196 Milestones, the column "Date Result Reported" on THIS page is typically the date that I received the email announcing the milestone. It may or may not be the actual date the the person achieved the result. Please understand that sometimes someone will send me something, and I may not know when their file was completed, but I should always know when I got the email. I try to use the actual file date, if I know it, but I don't typically write back to ask for that information. If you need the specific date, contact me or the credited person, and we will try to find it out.

Lychrel Numbers and Palindromes

The links in the table open the verification data for the specific seed. As I get the data from the other users, I will try to keep the tables updated. Right now, they are still kind of a mess. If you are working any other numbers, send me your data and I will put it all here. Obviously, each link will open to it's own seed number.

What I would like is data for every each dataset at the following digit points: 1 million, 5 million, 10 million and 25 million. Then I would like every 25 million after that. The 1 million point is important, because it allows someone who is testing a private application, to get verifiable results in a short manner of time. The other data points are important to not have too large a gap between last know separation, should we ever discover that two seeds have converged onto the same thread. The 25 million point and above is just a convenient point for me to compile data and not clutter things TOO badly!!

What I will take, is whatever you send me.

In the cases where I know someone has passed a milestone, but not sent me the data yet, or that they have sent it to me, and I have lost it, the column simply reads: "Data Not Yet Reported". As I get the data, I will fill in the holes.

Seed Under Test Digit Milestone Iteration Date Result Reported Credited Person
879

1,997

7,059

9,999

10,563

10,553

10,577

10,877

99,999

999,999

9,999,999

99,999,999

210,000,000

150,000,000

44,400,000

25,000,000

34,600,000

33,100,000

90,000,000

44,000,000

25,000,000

25,000,000

25,000,000

25,000,000

507,311,639

362,373,714

107,259,370

60,392,862

83,582,443

79,967,949

217,440,699

101,452,280

60,400,631

60,396,593

60,395,527

60,393,206

December 27, 2005

January 16, 2006

October 13, 2003

March 15, 2005

October 2, 2003

October 2, 2003

January 21, 2006

January 18, 2005

March 18, 2005

March 3, 2005

February 24, 2005

February 19, 2005

Eric Goldstein

Matt Stenson

Matt Stenson

Vaughn Suite

Matt Stenson

Matt Stenson

Pierre Laurent

Matt Stenson

Vaughn Suite

Vaughn Suite

Vaughn Suite

Vaughn Suite