29987...30597 (71-digits)
This number is a prime.
2
9987151430 8934842467 1669750806 4240936086 9176146160 7292446410 6966030597
2# + 3# + 5# + 7# + 11# + ... + 173# + 179# - 1 is prime. Note that the next two terms in this series are also prime. [Rupinski]
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