MathBabbler visited Google on Pi Day 2009 expecting to find a modified logo to celebrate Pi Day, but instead the Google logo had been modified to honor Italian astronomer Giovanni Schiaparelli. Clicking the logo took users to a webpage that stated the following: "In 1890, Italian astronomer Giovanni Schiaparelli drew this map of Mars. Today, on his

`th birthday, we are excited to include his work with many other new features for Mars in Google Earth."`

174MathBabbler Number Analyst (MBNA) output: ========================================= 174 is a natural, whole, integer 174 is even 174 proper divisors are: 1,2,3,6,29,58,87, 174 is abundant (sum of divisors is 186) 174 is unhappy 174 is not a Harshad number 174 is not prime 174 has the prime factors: 2*3*29 174 in octal is 0256 174 in hexadecimal is 0xae 174 in binary is 10101110 (is odious) 174 nearest square numbers: -5...22 (169...196 [14]) sqrt(174) = 13.1909 ln(174) = 5.15906 log(174) = 2.24055 174 reciprocal is .00574712643678160919540229885057 174! is 6.42543e+315 174 is 55.3859 Pi years 174 is 8 score and 14 years 174 written as a Roman numeral is CLXXIV

`[Wikipedia]`

`is a`

174sphenic numberbecause it is "positive integer which is the product of three distinct prime numbers."Note: On 14 March 2009, the MBNA did not check for sphenic numbers.

The first few sphenic numbers are...

30, 42, 66, 70, 78, 102, 105, 110, 114, 130, 138, 154, 165OEIS.org::id:A007304

## Update::2009.03.16

The MBNA's (MathBabbler Number Analyst) prime factors program has been modified to check for sphenic numbers.

GDT::C++::Code::Prime Factors code

**Creator:** Gerald Thurman
[gthurman@gmail.com]

**Created:** 14 March 2009

This work is licensed under a Creative Commons Attribution 3.0 United States License.