25505...67811 (314-digits)

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

                                       2550 5736312946 2629609619 8760564259
9639461386 9233083719 6265954739 2346241345 9779574852 4647837980 7956931986
5081597767 5350553918 9911513352 5229873611 2779182748 5420086895 3965835942
1963331502 8695611920 1229888988 7006079992 7954111882 6902307891 3107603617
6347794894 3203210277 3359416908 6500719328 0401716384 0644987871 7537567811

The smaller member of the first 314-digit twin prime pair to occur in the decimal expansion of π. [Bajpai]