9007199254740991

9007199254740991 is a positive integer equal to \(2^{53} - 1\). It is notable in computer science for being the largest odd number, which can be represented exactly in the  floating-point format (which has a 53-bit significand).

Its prime factorization is 9007199254740991 = 6361 × 69431 × 20394401.