98894...64281 (161-digits)

This number is a probable-prime (likely to be a prime but we have not (re-)proven it on this site).

                                                     9 8894699565 6473600729
5999839128 8103197426 3125179714 1432012311 2795518947 7817269141 5891177991
9564812558 0018455065 6329528598 5910009086 2180297756 3789259991 6499464281

The largest 161-digit prime found in the first 10^4 digits in decimal expansion of Golden Ratio. [Bajpai]