Pointless math challenge #1435 : In the 17th century, a guy named Marin Mersenne told people about a number that he claimed was factorable, and he challenged his students and peers to factor it. The number is :

1326861043989720531776085755060905614293539359890333525802891469459697.

It took a Cray to crack the problem. The solution is :

178230287214063289511 times 61676882198695257501367 times 12070396178249893039969681.

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