For those of you who hadn’t heard, because I’m a dumbass. Birthday party tonight, my place. Celebrate my 28th year. If you don’t have my address, put a comment on here with your preferred means of contact, and immediately delete it. I’ll get an email and get back to you. =)
aww well i hope you have a great night buddy 🙂 Can’t go because of the surgery but know I’m thinking of ya
Happy Birthday … wish I was there to say it!
*HUGS*
Happy Birthday!
Happy birthday.
Happy birthday. 28 is one of only two times in your life you get to be a perfect number. And you already experienced the first one (6).
Random: how is 28 a perfect number?
Cheerful: ¡Feliz Cumpleaños!
*geek hat on*
sum and product of its factors amount to the numbers = 3*2*1=3+2+1=6 and…. same for 28…
*geek hat off*
Close, it’s actually only the sum. Six is the only number where both the sum and product of its factors equate to the number.
Niftyness! *feels enlightened for the day*
According to the mathemetician Euler, a number is “perfect” if the sum of its factors, other than itself, is equal to itself. Thus, for 6, whose factors are 1, 2, 3, and 6, the sum 1 + 2 + 3 is equal to 6. For 28, 1 + (2 + 14) + (4 + 7) = 28.
Perfect numbers can be found formulaically by using Mersenne primes (prime numbers of the form Mn = 2n – 1): Pn = 2n-1 * Mn
Mn must be prime for the formula to work, so cases like M=1 and M=4 do not produce perfect numbers. The third perfect number is 496, produced when M=5.
oops 🙂