12200...00221 (149-digits)
This number is a prime.
122000000
0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000000
0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000221
Just showing those entries submitted by 'Earls': (Click here to show all)
122*10^146+221 is prime. Note that 122*10^2396+221 is a Fermat and Lucas PRP. [Earls]
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