- 666, 4444, and 999999. All
repdigits are
palindromic numbers and are
multiples of repunits.
Other well-known
repdigits include the
repunit primes and...
-
Repdigits are a
generalization of repunits; they are
integers represented by
repeated instances of the same digit. For example, 333 is a
repdigit. The...
- 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...
-
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...
- 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...
- 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...
- = 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...
-
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...
-
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 =...
