Old Pages from the Cunningham Project

The Cover Letters often refer to "Updates" which are not available on the Web. Everything in these Updates is contained in the Third Edition of the book, which is available on the Web, except for the "wanted lists." For Pages 57-60, the "wanted lists" are in the "Champions" page below. I will try to find and post other old "wanted" lists and lists of "Champions" and first holes.

These Pages cover the period July 1, 1985 through May 12, 1990. During this period the Elliptic Curve Method found very many factors of Cunningham numbers. The Quadratic Sieve and its variations factored many hard numbers and raised the size of the smallest unfactored number from 54 to 91 decimal digits. Page 53 reports the first factorization of a hard 100-digit number. As reported in the New York Times, with the help of dozens of researchers and hundreds of computers, AK Lenstra and M Manasse factored the number 11,104+ c100 by the Quadratic Sieve.

Some of the Cover Letters below were converted from ancient troff. Note that an underscore (_) means a subscript follows: "F_8" means "F sub 8", and a caret (^) means that a superscript follows: "2^n" means "2 raised to the power n".


Page 31. - - - The cover letter for Page 31.

Page 32. - - - The cover letter for Page 32.

Page 33. - - - The cover letter for Page 33.

Page 34. - - - The cover letter for Page 34.

Page 35. - - - The cover letter for Page 35.

Page 36. - - - The cover letter for Page 36.

Page 37. - - - The cover letter for Page 37.

Page 38. - - - The cover letter for Page 38.

Page 39. - - - The cover letter for Page 39.

Page 40. - - - The cover letter for Page 40.

Page 41. - - - The cover letter for Page 41.

Page 42. - - - The cover letter for Page 42.

Page 43. - - - The cover letter for Page 43.

Page 44. - - - The cover letter for Page 44.

Page 45. - - - The cover letter for Page 45.

Page 46. - - - The cover letter for Page 46.

Update 4 shown here for historical reasons.

Page 47. - - - The cover letter for Page 47.

Page 48. - - - The cover letter for Page 48.

Page 49. - - - The cover letter for Page 49.

Update 5 shown here for historical reasons.

Page 50. - - - The cover letter for Page 50.

Page 51. - - - The cover letter for Page 51.

Page 52. - - - The cover letter for Page 52.

Page 53. - - - The cover letter for Page 53.

Page 54. - - - The cover letter for Page 54.

Page 55. - - - The cover letter for Page 55.

Page 56. - - - The cover letter for Page 56.

Page 57. - - - The cover letter for Page 57. - - - Champions for Page 57.

Page 58. - - - The cover letter for Page 58. - - - Champions for Page 58.

Page 59. - - - The cover letter for Page 59. - - - Champions for Page 59.

Page 60. - - - The cover letter for Page 60. - - - Champions for Page 60.


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(This page last modified November 9, 2010)