- 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...
-
colossally abundant number,
superior highly composite number 22,222,222 =
repdigit 22,235,661 = 33×77 22,667,121 = 47612 = 694 24,010,000 = 49002 = 704 24...
-
religious and
political contexts. 777 is an odd, composite,
palindromic repdigit. It is also a
sphenic number, with 3, 7, and 37 as its
prime factors. Its...
-
number ending in 1, 3, 7 or 9 221,760 =
highly composite number 222,222 =
repdigit 227,475 =
Riordan number 234,256 = 224 237,510 =
harmonic divisor number...
- = 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...
- 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...
- (eleven) is the
natural number following 10 and
preceding 12. It is the
first repdigit. In English, it is the
smallest positive integer whose name has
three syllables...
- is it ever a
solution to x - φ(x),
making it a noncototient. 170 is a
repdigit in base 4 (2222) and base 16 (AA), as well as in
bases 33, 84, and 169...
