- In
recreational mathematics, a
repdigit or
sometimes monodigit is a
natural number composed of
repeated instances of the same
digit in a
positional number...
- 6th
primary pseudoperfect number. 2,219,006,624 = 745 2,222,222,222 =
repdigit 2,276,423,485 =
number of ways to
partition {1,2,...,12} and then partition...
-
pandigital number in base 8. 2,178,309 =
Fibonacci number 2,222,222 =
repdigit 2,266,502 =
number of
signed trees with 13
nodes 2,274,205 = the number...
- set. 511 = 7 × 73. It is: a
Harshad number. a
palindromic number and a
repdigit in
bases 2 (1111111112) and 8 (7778) 5-1-1, a
roadway status and transit...
- 000,000 = 307 22,164,361,129 = 1574642 = 28093 = 536 22,222,222,222 =
repdigit 22,801,763,489 = 1,000,000,000th
prime number 23,818,760,154 =
number of...
-
ending in 1, 3, 7 or 9 221,760 = 32nd
highly composite number 222,222 =
repdigit 224,737 = the 20,000th
prime number 227,475 =
Riordan number 234,256 =...
-
Kaprekar number a
lucky number a
palindromic number in base ten the
ninth repdigit the sum of the
cubes of
three consecutive integers: 99 = 23 + 33 + 43....
- = 1-automorphic
number 214,358,881 = 146412 = 1214 = 118 222,222,222 =
repdigit 222,222,227 = safe
prime 223,092,870 = the
product of the
first nine prime...
-
eleventh primorial 208,023,278,209 = 28th
Motzkin number. 222,222,222,222 =
repdigit 225,851,433,717 = 56th
Fibonacci number. 247,489,226,192 =
number of centered...
- 111, or 1111 that
contains only the
digit 1 — a more
specific type of
repdigit. The term
stands for "repeated unit" and was
coined in 1966 by
Albert H...
