110 (number)

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110 (one hundred ten) is the natural number after 109 and before 111. Its factors are 2 × 5 × 11, so its divisors are 1, 2, 5, 10, 11, 22, 55, and 110. It is a sphenic number (a product of three distinct primes) and a pronic number (10 × 11). In Roman numerals it is CX. In other bases: binary 1101110_2, ternary 11002_3, base 6 302_6, base 8 156_8, base 12 92_12, and base 16 6E_16. It can be written as the sum of three consecutive squares: 5^2 + 6^2 + 7^2. RSA-110 is a large semiprime used in the RSA Factoring Challenge. In base 10, 110 is a Harshad (divisible by the sum of its digits, since 1+1+0=2 and 110 ÷ 2 = 55) and a self number (not generated by any smaller number).