Is 9999999967 a prime number?
The number 9,999,999,967 is the largest 10 digit prime number.
What is the number of 9999999999?
99,999,999 (ninety-nine million nine hundred ninety-nine thousand nine hundred ninety-nine) is an odd eight-digits composite number following 99999998 and preceding 100000000. In scientific notation, it is written as 9.9999999 × 107.