While working on a nBAB for the number 153, MathBabbler observed from the MBNA output for 153 that it was a Ruth-Aaron Pair with the number

`.`

154MathBabbler Number Analyst (MBNA) output: ========================================= 154 is a natural, whole, integer 154 is even 154 proper divisors are: 1,2,7,11,14,22,77, 154 is deficient (sum of divisors is 134) 154 is unhappy 154 is not a Harshad number 154 is not prime 154 has the prime factors: 2*7*11 (sum=20) 154 is sphenic (had 3 unique prime factors) 154 sum of prime factors is: 20 154 and 153 are a Ruth-Aaron pair (distinct prime factors) 154 in octal is 0232 154 in hexadecimal is 0x9a 154 in binary is 10011010 (is evil) 154 nearest square numbers: -10...15 (144...169 [13]) sqrt(154) = 12.4097 ln(154) = 5.03695 log(154) = 2.18752 154 reciprocal is .00649350649350649350649350649350 154! is 3.08977e+271 154 is 49.0197 Pi years 154 is 7 score and 14 years 154 written as a Roman numeral is CLIV

154_{7}is repdigit 88_{10}.1 * 7^2 = 49; 5 * 7^1 = 35; 4 * 7^0 = 4 49 + 35 + 4 = 88

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

**Created:** 10 July 2009

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