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28361...04509 (56-digits)
This number is a prime.
283613 7820358161 1893021499 5270808706 6882123517 8133404509
Just showing those entries submitted by 'Gupta': (Click here to show all)
The largest prime less than a googol that is the product
of a repunit number and all its truncations plus eight,
i.e., 11111111111*1111111111….*1111*111*11*1 + 8 [Gupta]
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