354 Jean-Marie De Koninck
25 479 451 773
the second number n such that
min(λ(n), λ(n + 1), λ(n + 2), λ(n + 3), λ(n + 4), λ(n + 5))
6
5
:
here
min(λ(n), λ(n + 1), λ(n + 2), λ(n + 3), λ(n + 4), λ(n + 5))
min(1.29744, 1.27631, 1.32039, 1.21002, 1.30973, 1.21811) = 1.21002;
see the number 51 767 910.
27 512 614 111
the third number n 1 whose sum of digits is equal to
7

n (see the number
612 220 032).
28 091 567 595
the
12th
horse number (see the number 13).
31 111 221 312
the 20th insolite number (see the number 111).
31 998 395 520 (=
27
·
35
· 5 ·
72
· 13 · 17 · 19)
the second 5-perfect number (see the number 14 182 439 040).
32 111 111 232
the
21rst
insolite number (see the number 111); it is the smallest insolite number
whose first two digits are different from 1.
33 489 857 205
the number of 12 digit prime numbers (see the number 21).
37 607 912 018
the number of prime numbers
1012.
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