## Tuesday, January 3, 2012

### 124

124 = 22 x 31.

124 is 444 in base 5.

124 is the smallest number whose sum of digits (1 + 2 + 4 = 7) as well as the number itself are one less than the cube of a prime.

124 is the smallest number with the property that its first three multiples contain the digit 2: 124, 248, and 372.

124 is the sum of eight consecutive primes: 124 = 5 + 7 + 11 + 13 + 17 + 19 + 23 + 29.

124 = 27 - 22.

124 = 52 + 52 + 52 + 72.

The Fiat 124 was a family car produced in Italy from 1966 to 1974.

#### 1 comment:

Anonymous said...

Algunas propiedades analíticas del número 124
Ecuación Pell:
4620799^2-124*414960^2=1
http://math.fau.edu/richman/pell-m.htm
Orden multiplicativo:
Como 12^2>124>11^2, y los primos equidistantes son 13 y 11
11^30=1(mód.124) es el orden multiplicativo.
http://www.alpertron.com.ar/DILOG.HTM
N(a+b(-D)^(1/2)=x^2+Dy^2=124=5^2+11*3^2=7^2+3*5^2
124=(5+3(-11)^(1/2))(5-3(-11)^(1/2))=((7+3(-5)^(1/2))((7-3(-5)^(1/2))
Polinomios mínimos (PM):
z^2-10z+124=0, donde z=5+-3(11)^(1/)i=124
z^2-14z+124=0,donde z =7+-5(3)^(1/)i=124
N(a + b(D)^(1/2)=x^2+Dy^2=124=12^2-5*2^2=13^2-5*3^2
124=((12+2(5)^(1/2))((12-2(5)^(1/2))=((13+3(5)^1/2))((13-3(5)^1/2))
Polinomios mínimos(PM):
z^2-24z+124=0, donde z=2(6+-(5)^(1/2))=124
z^2-26z+124=0, donde z=13+-3(5)^(1/2)=124