The book is now available! 10000...76353 (100-digits)
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                                            1000000000 0000000000 0000000000
0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000076353
+ 10^99 + 76353 is the smallest 100-digit prime that produces two other primes by changing only its first digit. I.e., 5*10^99 + 76353 and 7*10^99 + 76353 are primes. [Opao]




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