Those Fascinating Numbers 319
91 963 648 (= 28 · 7 · 19 · 37 · 73)
the second solution of
σ(n)
n
=
5
2
: the smallest solution is 24.
93 625 991
the first member p of the fourth 8-tuple (p, p + 2, p + 6, p + 8, p + 12, p + 18, p +
20, p + 26) made up entirely of prime numbers: the smallest 8-tuple satisfying
this property is (11, 13, 17, 19, 23, 29, 31, 37), while the second and third are
those beginning respectively with 15 760 091 and 25 658 441.
95 949 311
the first term of the smallest sequence of 16 consecutive consecutive prime
numbers all of the form 4n + 3 (see the number 463).
98 690 561
the smallest prime number p such that Ω(p 1) = Ω(p + 1) = 12: here
98 690 650 = 29 · 5 · 19 · 2029 and 98 690 562 = 2 · 39 · 23 · 109 (see the number
271).
98 754 210
the only eight digit self replicating number (see the number 954).
98 765 431
the largest prime number made up of eight distinct digits (see the number
9 871).
99 523 456
the
16th
dihedral perfect number (see the number 130).
99 999 989
the largest eight digit prime number.
100 000 007
the smallest nine digit prime number.
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