- In
recreational mathematics, a
repunit is a
number like 11, 111, or 1111 that
contains only the
digit 1 — a more
specific type of repdigit. The term stands...
-
repdigits are
palindromic numbers and are
multiples of
repunits.
Other well-known
repdigits include the
repunit primes and in
particular the
Mersenne primes (which...
- This is a list of
repunit primes in
various bases. Base-2
repunit primes are
called Mersenne primes. The
first few base-3
repunit primes are 13, 1093...
- faulty.
Repunits are
integers that are
represented with only the
digit 1. For example, 1111 (one thousand, one
hundred and eleven) is a
repunit. Repdigits...
- 199933, 1111111111111111111, 11111111111111111111111 (OEIS: A016114) All
repunit primes are circular. A
cluster prime is a
prime p such that
every even...
- 11111111111111111111111, ... (sequence A004022 in the OEIS).
These primes are
called repunit primes.
Another example is when we take b = −12, we get n
values of: 2...
- 051 =
fifth Keith prime 1,089,270 =
harmonic divisor number 1,111,111 =
repunit 1,112,083 =
logarithmic number 1,129,30832 + 1 is
prime 1,136,689 = Pell...
- 641, 2137, 3011, 268207, ... (sequence A001562 in the OEIS). See
Repunit#
Repunit primes for the list of the
generalized Wagstaff primes base b {\displaystyle...
- primes, but
later they were also
called absolute primes. In base 2, only
repunits can be
permutable primes,
because any 0
permuted to the ones
place results...
- in
decimal R 19 {\displaystyle R_{19}} is also the
second to be a
prime repunit (after R 2 {\displaystyle R_{2}} ),
followed by R 23 {\displaystyle R_{23}}...
