Marin Mersenne2^P-1
2014-09-17 13:31:43 UTC


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Today's Numbers
Teams 742
Users 126,592
CPUs 982,554
TFLOP/s 181.970
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Great Internet Mersenne Prime Search
Finding World Record Primes Since 1996

GIMPS by Mersenne Research, Inc.

The Great Internet Mersenne Prime Search and the web content, data and software downloads at are owned and operated by Mersenne Research, Inc. (hereafter synonymously referred to as "GIMPS"), a non-profit corporation charitably organized to promote and conduct mathematical and computer science research and support related education within the meaning and limits of U.S. Internal Revenue Code 501(c)(3), and the State of California Revenue and Taxation Code Code 23701(d) (Scientific, Charitable). Charitable donations to GIMPS are tax-deductible as allowed by law.

Why some rules, terms and use conditions are necessary

Some rules, terms and use conditions are necessary to comply and transact official business with governing authorities and agencies, communicate the intent and scope of GIMPS research projects where conflicts of interest could otherwise arise, and spell out what GIMPS will do under various circumstances to fairly and uniformly handle research discovery awards for the project's many participants.

Terms and Conditions of Use ("TCU")

Research Discovery Award Rules ("Rules")

1) General Award Rules

2) Research Discovery Awards

Mersenne Prime Award of USD $3,000.00

Awarded to a GIMPS Participant for each new Mersenne prime discovered after August 23, 2008 and having fewer than 100,000,000 (decimal) digits. Rules in addition to the General Award Rules:

100 Million Digit Prime Award of USD $50,000.00

Awarded to a GIMPS Participant for the first prime discovered having at least 100,000,000 (decimal) digits. Rules in addition to the General Award Rules:

Privacy Policy

Thank you for investing your trust. Since 1996, we never have and never will sell, distribute or release your email address or any other information you provide us for the administration and operation of this amazing public participation research project, except in the unlikely requirement to comply with law. Last updated 15 October 2008.

Software End User License Agreement ("EULA")


Expenditures & Revenue, Balance Sheet



GIMPS and PrimeNet created by George Woltman and Scott Kurowski. GIMPS (Mersenne Research, Inc.) Board of Directors: Scott Kurowski, George Woltman, Luke Welsh. Corporate Officers: George Woltman, Scott Kurowski. Technology, software, website: George Woltman, Scott Kurowski. We gratefully acknowledge the countless GIMPS participants and other contributors since 1996, and wish everyone happy prime hunting!

©1996-2014 Mersenne Research, Inc.
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