350 Jean-Marie De Koninck
9 999 999 967
the largest ten digit prime number.
10 000 000 001 (= 101 · 3541 · 27961)
the tenth number of the form
nn
+ 1 (see the number 3 126).
10 000 000 019
the smallest eleven digit prime number.
10 267 296 896
the second number which can be written as the sum of three sixth powers in
two distinct ways: 10 267 296 896 = 66 + 386 + 46 = 206 + 306 + 466 (see the
number 160 426 514).
10 326 137 820
the smallest 8-composite number n such that n + 2 is also an 8-composite
number: here 10 326 137 820 =
22
· 3 · 5 · 31 · 41 · 43 · 47 · 67 and 10 326 137 822 =
2 · 7 ·
112
· 13 · 19 · 23 · 29 · 37 (see the number 1 428).
10 405 071 317
the fourth prime number of the form
11
+
22
+ . . . +
nn,
here with n = 10 (see
the number 3 413).
10 460 353 203
the second number n 1 whose sum of digits is equal to
7

n (see the number
612 220 032).
10 475 688 327 (= 3 · 13 · 479 · 560767)
the 10 000 000
000th
composite number (see the number 133).
10 480 142 147
the 16th Bell number (see the number 52).
10 604 156 641 (=
134
· 371281)
the fifth 12-hyperperfect number (see the number 697).
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