Largest n-digit number that is divisible by exactly 3 primes (counted with multiplicity).
8, 99, 994, 9994, 99997, 999994, 9999994, 99999994, 999999998, 9999999995
5 seqfan posts
Sun Sep 26 06:48:14 CEST 2010 [seqfan] Re: n-th number whose sum of divisors is a n-gonal number
Sun Sep 26 05:22:18 CEST 2010 [seqfan] Re: n-th number whose sum of divisors is a n-gonal number
Sun Sep 26 04:07:37 CEST 2010 [seqfan] Re: n-th number whose sum of divisors is a n-gonal number
Sun Sep 26 02:47:47 CEST 2010 [seqfan] Re: n-th number whose sum of divisors is a n-gonal number
Sat Sep 25 22:43:13 CEST 2010 [seqfan] n-th number whose sum of divisors is a n-gonal number
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