11645...78899 (161-digits)

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

                                                     1 1645629909 8162905552
0852479035 2406020172 7997471753 4277759277 8625619432 0827505131 2181562855
1222480939 4712341451 7022373580 5772786160 0868838295 2304592647 8780178899

The first 161-digit prime to occur in the decimal expansion of Golden Ratio. [Bajpai]