On February 18, 2005, Dr. Martin Nowak from Germany, found the new largest known prime number,
2 |

On May 15, 2004, Josh Findley discovered the 41st Mersenne Prime, 2 |

In the December 22, 2003, issue of |

On November 14, 2001, Michael Cameron, a 20-year-old Canadian
had discovered the previously largest known prime number to date:
2 |

On June 1, 1999, in Orlando, Florida, Nayan
Hajratwala discovered the first million-digit prime
number. The feat was accomplished using software
written by George Woltman. |

The new prime number is one of a special class of
primes called |

Index | Number | Digits in Number | Year | Discoverer |

1 | 2^2-1 | 1 | - | - |

2 | 2^3-1 | 1 | - | - |

3 | 2^5-1 | 2 | - | - |

4 | 2^7-1 | 3 | - | - |

5 | 2^13-1 | 4 | 1461 | - |

6 | 2^17-1 | 6 | 1588 | Cataldi |

7 | 2^19-1 | 6 | 1588 | Cataldi |

8 | 2^31-1 | 10 | 1750 | Euler |

9 | 2^61-1 | 19 | 1883 | Pervushin |

10 | 2^89-1 | 27 | 1911 | Powers |

11 | 2^107-1 | 33 | 1914 | Powers |

12 | 2^127-1 | 39 | 1876 | Lucas |

13 | 2^521-1 | 157 | 1952 | Robinson |

14 | 2^607-1 | 183 | 1952 | Robinson |

15 | 2^1279-1 | 386 | 1952 | Robinson |

16 | 2^2203-1 | 664 | 1952 | Robinson |

17 | 2^2281-1 | 687 | 1952 | Robinson |

18 | 2^3217-1 | 969 | 1957 | Riesel |

19 | 2^4253-1 | 1,281 | 1961 | Hurwitz |

20 | 2^4423-1 | 1,332 | 1961 | Hurwitz |

21 | 2^9689-1 | 2,917 | 1963 | Gillies |

22 | 2^9941-1 | 2,993 | 1963 | Gillies |

23 | 2^11213-1 | 3,376 | 1963 | Gillies |

24 | 2^19937-1 | 6,002 | 1971 | Tuckerman |

25 | 2^21701-1 | 6,533 | 1978 | Noll |

26 | 2^23209-1 | 6,987 | 1979 | Noll |

27 | 2^44497-1 | 13,395 | 1979 | Slowinski |

28 | 2^86243-1 | 25,962 | 1982 | Slowinski |

29 | 2^110503-1 | 33,265 | 1988 | Colquitt |

30 | 2^132049-1 | 39,751 | 1983 | Slowinski |

31 | 2^216091-1 | 65,050 | 1985 | Slowinski |

32 | 2^756839-1 | 227,832 | 1992 | Slowinski |

33 | 2^859433-1 | 258,716 | 1994 | Slowinski |

34 | 2^1257787-1 | 378,632 | 1996 | Slowinski |

35 | 2^1398269-1 | 420,921 | 1996 | Armengaud |

36 | 2^2976221-1 | 895,932 | 1997 | Spence |

37 | 2^3021377-1 | 909,526 | 1998 | Clarkson |

38 | 2^6972593-1 | 2,098,960 | 1999 | Hajratwala |

39 | 2^13466917-1 | 4,053,946 | 2001 | Cameron |

40 | 2^20996011-1 | 6,320,430 | 2003 | Shafer |

41 | 2^24036583-1 | 7,235,733 | 2004 | Findley |

42 | 2^25964951-1 | 7,816,230 | 2005 | Nowak |

source: Dr. Michael W. Ecker Editor and Publisher Recreational & Educational Computing 187 Ferguson Avenue, Suite D Shavertown, PA 18708 e-mail: DrMWEcker@aol.com |

## Prime Pages |
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