Number reference
95 explained.
95: ninety-five, composite; factors, prime factorization, roots, binary, hexadecimal, and digit properties.
Identity and representations
- Written form
- ninety-five
- Classification
- composite
- Factors
- 1, 5, 19, 95
- Prime factorization
- 5 × 19
- Square root
- 9.746794
- Cube root
- 4.562903
- Binary
- 1011111
- Octal
- 137
- Hexadecimal
- 5F
- Roman numeral
- XCV
- Digit sum
- 14
- Digital root
- 5
What makes 95 notable
- Semiprime. 95 = 5 × 19, a product of exactly two primes. That gives it just four divisors, so it splits into equal groups in only two non-trivial ways.
95 in everyday use
Ninety-five is the atomic number of americium, the man-made element inside most household smoke detectors, where a speck of it ionises the air. Martin Luther's Ninety-Five Theses, posted in 1517, set off the Reformation. Windows 95 introduced the Start button and taskbar. In statistics a 95 percent confidence interval is the conventional standard, and the printable ASCII characters, from space to tilde, number exactly 95.
Ninety-five is 5 × 19 and the sum of seven consecutive primes, 5 + 7 + 11 + 13 + 17 + 19 + 23. It has four divisors, and in binary it is 1011111. Its reversal, 59, is prime, and its digits sum to 14. Ninety-five is also the number of printable ASCII codes because the range from 32 to 126 contains 95 values.
Nearby numbers
How to read this page
The factor list shows every way 95 splits into equal whole-number groups — 4 divisors in total. The prime factorisation is the compact form of that same information, and the base conversions restate 95 for contexts that do not use decimal.
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