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 Prime divisors (Posted on 2005-01-04)
6300846559 is such that 6 is divisible by 2; 63, by 3; 630, by 5; 6300, by 7; and, in general, if you take its first N digits, it will be divisible by the N-th prime.

There is only one other such 10 digit number: can you find it?

 See The Solution Submitted by e.g. Rating: 3.7500 (4 votes)

 Subject Author Date answer K Sengupta 2007-04-17 15:13:50 re: A further analysis Ady TZIDON 2005-01-05 09:50:03 re(4): Solution (VB program) (Thanks !) Penny 2005-01-04 20:03:37 re(2): A further analysis (my oopsies) Jer 2005-01-04 19:11:40 re: A further analysis Charlie 2005-01-04 18:51:16 re(3): Solution (VB program) Charlie 2005-01-04 18:29:01 A further analysis Jer 2005-01-04 18:20:26 re(2): Solution (VB program) Penny 2005-01-04 17:23:43 Short program Federico Kereki 2005-01-04 17:19:47 re: Solution (VB program) Charlie 2005-01-04 16:00:11 Solution (VB program) Penny 2005-01-04 15:44:05

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