11112111

11112111 is an eight-digit decimal integer, written as 11,112,111 in standard grouping. The digit string is mostly composed of 1s, with a single 2 appearing in the middle (the sequence 1-1-1-1-2-1-1-1).

Mathematical properties: The sum of the digits is 9, which makes the number divisible by 9 and by 3. Indeed, 11112111 = 9 × 1,234,679. The quotient 1,234,679 is odd and not divisible by 3, so the number is composite. A full prime factorization would require further testing of the quotient for larger factors.

Context and usage: As a numeric value, 11112111 may be encountered as a random-looking identifier, a sample number in mathematical or programming examples, or a date-like string in certain formats. It does not correspond to a widely cited mathematical constant or a well-known sequence. The sequence is not a palindrome, since reversing the digits yields 11121111, which differs from the original.

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