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The Nigerian Advance Fee Scheme (also known internationally as "4-1-9" fraud after the section of the Nigerian penal code which addresses fraud schemes) is generally targeted at small and medium sized businesses, as well as charities. [Croll]
Dutch microscopy pioneer and naturalist Anton van Leeuwenhoek (1632--1723) ground a total of 419 lenses during his life. [Oakes]
419 is the smallest number which when divided by 2, 3, 4,
5, 6 and 7 leaves remainders of 1, 2, 3, 4, 5 and 6
respectively. It is also interesting to note that 419 is
one less than the least common multiple of the first 7
integers. [Tryczak]
419 is a Sophie Germain prime, since 2 * 419 + 1 =
839, which is prime. Note that it is the 22nd Sophie
Germain prime, and 22 = 2 * 11 is the product of two
Sophie Germain primes. [Carmichael]
419, 41, and 19 are all primes. The reversals of 419, 41, and
19 are all semiprimes. [Poo Sung]
Milligrams of potassium in one-half cup cooked spinach. [Karcher]
To link to this page use http://primes.utm.edu/curios/page.php?number_id=1493
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