I’m currently in my trial membership of Prime and I can’t decide if it’s worth it. I’m really surprised to see that you found the amazon prices to be cheaper than those in a brick and mortar store. I compared things like pasta sauce, detergent, cleaning products, etc, and most things were considerably more expensive on amazon than in a store. I love the convenience of online shopping and having it shipped to me. That means I don’t have to schlepp the whole gang to the store. But, am I really saving money when the items are more expensive?
Contemporary folklore and stereotypes that we are exposed to contribute to a lack of knowledge concerning native American fishing practices. Brumbach (1986:36) noted that "popular folklore emphasizes fertilizer value of the fish but seems vague about their consumption as food." Perhaps the stereotype of the "hunter/gatherer" among anthropologists similarly attenuated a focus on fishing, as the word "fishing" is not included in the phrase "hunting/gathering." Despite this fact, in some societies, the role of fishing may have been equal to or surpassed that of hunting and/or gathering. 
with a , b any coprime integers, a > 1 and − a < b < a . (Since a n − b n is always divisible by a − b , the division is necessary for there to be any chance of finding prime numbers. In fact, this number is the same as the Lucas number U n ( a + b , ab ) , since a and b are the roots of the quadratic equation x 2 − ( a + b ) x + ab = 0 , and this number equals 1 when n = 1 ) We can ask which n makes this number prime. It can be shown that such n must be primes themselves or equal to 4, and n can be 4 if and only if a + b = 1 and a 2 + b 2 is prime. (Since a 4 − b 4 / a − b = ( a + b )( a 2 + b 2 ) . Thus, in this case the pair ( a , b ) must be ( x + 1, − x ) and x 2 + ( x + 1) 2 must be prime. That is, x must be in A027861 .) It is a conjecture that for any pair ( a , b ) such that for every natural number r > 1 , a and b are not both perfect r th powers, and −4 ab is not a perfect fourth power . there are infinitely many values of n such that a n − b n / a − b is prime. (When a and b are both perfect r th powers for an r > 1 or when −4 ab is a perfect fourth power, it can be shown that there are at most two n values with this property, since if so, then a n − b n / a − b can be factored algebraically) However, this has not been proved for any single value of ( a , b ) .