17504...79167 (20562-digits)

This number is a prime.

+ The largest known Mills' prime: ((((((2521008887^3+80)^3+12)^3+450)^3+894)^3+3636)^3+70756)^3+97220. Proven by Morain with ECPP in 2006, this prime surpassed the previous general prime record by over 5000 digits. [Caldwell]

+ The largest known ordinary prime at the time of its discovery (June 2006). [Caldwell]

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