Your donation is tax-deductible as allowed by law. GIMPS (Mersenne Research, Inc.) is a 501(c)(3) organization, tax ID 26-3446106. Your charitable gift to GIMPS not-for-profit research funds operating expenses and research discovery awards. For more information about GIMPS please click here.
To donate a gift of any amount by mailed check or money order, please mail it payable to Mersenne Research at Mersenne Research / 800 Via Bahia / San Marcos CA 92069, USA. For U.S. gift donations of $500 USD or more please include your return mailing address for a receipt.