- 666, 4444, and 999999. All
repdigits are
palindromic numbers and are
multiples of repunits.
Other well-known
repdigits include the
repunit primes and...
- four-digit
numbers for
which Kaprekar's
routine does not
reach 6174 are
repdigits such as 1111,
which give the
result 0000
after a
single iteration. All...
-
Repdigits are a
generalization of repunits; they are
integers represented by
repeated instances of the same digit. For example, 333 is a
repdigit. The...
-
whose all
permutations are
composites but they are not
multiples of 3,
repdigits or
numbers which only have
digits 0, 2, 4, 5, 6 and 8, even excluding...
- 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...
- 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...
- 37,
therefore all
triplets (numbers like 222 or 777) in base ten are
repdigits of the form 3 n × 37 {\displaystyle 3n\times 37} . As a repunit, it also...
- 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...
-
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...
-
follows for three-digit numbers: Take any three-digit number,
other than
repdigits such as 111.
Leading zeros are allowed.
Arrange the
digits in descending...
