• 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...
    27 KB (3,414 words) - 20:06, 10 July 2024
  • 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...
    73 KB (1,428 words) - 23:09, 11 September 2024
  • repdigits are palindromic numbers and are multiples of repunits. Other well-known repdigits include the repunit primes and in particular the Mersenne primes (which...
    14 KB (1,856 words) - 17:53, 28 June 2024
  • 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...
    9 KB (1,348 words) - 10:02, 3 August 2024
  • 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...
    71 KB (6,416 words) - 22:40, 13 September 2024
  • 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...
    34 KB (3,585 words) - 21:16, 17 August 2024
  • 641, 2137, 3011, 268207, ... (sequence A001562 in the OEIS). See Repunit#Repunit primes for the list of the generalized Wagstaff primes base b {\displaystyle...
    6 KB (870 words) - 17:16, 12 September 2024
  • Sierpinski problem 55555 = repdigit 55860 = harmonic divisor number 55987 = repunit prime in base 6 56011 = Wedderburn-Etherington number 56092 = the number...
    6 KB (525 words) - 19:51, 13 September 2024
  • squaring the square). 111 is R 3 {\displaystyle R_{3}} or the second repunit in decimal, a number like 11, 111, or 1111 that consists of repeated units...
    9 KB (1,159 words) - 02:25, 15 June 2024
  • 199933, 1111111111111111111, 11111111111111111111111 (OEIS: A016114) All repunit primes are circular. A cluster prime is a prime p such that every even...
    106 KB (5,780 words) - 17:15, 12 September 2024