420 = 22 x 3 x 5 x 7.
420 is the smallest number divisible by 1 through 7.
420 is the sum of four consecutive primes: 101 + 103 + 107 + 109 = 420.
420 is the smallest argument for which Euler’s prime generating polynomial p(n) = n2 + n + 41 has more than two prime factors: p(420) = 176861 = 71 x 53 x 47. For all smaller arguments, p(n) is either prime or semiprime.
In sailing, the 420 (dinghy) is a class of doublehanded racing sailboats.
Source: Prime Curios!
420 is the smallest number divisible by 1 through 7.
420 is the sum of four consecutive primes: 101 + 103 + 107 + 109 = 420.
420 is the smallest argument for which Euler’s prime generating polynomial p(n) = n2 + n + 41 has more than two prime factors: p(420) = 176861 = 71 x 53 x 47. For all smaller arguments, p(n) is either prime or semiprime.
In sailing, the 420 (dinghy) is a class of doublehanded racing sailboats.
Source: Prime Curios!
