RSA-170
RSA-170 has 170 decimal digits (563 bits), and was factored on December 29, 2009 by D. Bonenberger and M. Krone from Fachhochschule Braunschweig/Wolfenbüttel.
The value and factorization is as follows:
RSA-170 = 2606262368413984492152987926667443219708592538048640641616478519185999962854206936145 0283931914514618683512198164805919882053057222974116478065095809832377336510711545759 RSA-170 = 3586420730428501486799804587268520423291459681059978161140231860633948450858040593963 × 7267029064107019078863797763923946264136137803856996670313708936002281582249587494493The factorization was found using the general number field sieve algorithm.
Read more about this topic: RSA Numbers