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I guess a formula would be helpful
1. if the problem uses the words: " what is ___ of _____" multiply.
example what is 1/2 of 2, answer 1/2 multiplied times 2 is 1
I was intrigued by your answer and wanted to check the answer
thansk
mrtumtum
\left(
\begin{array}{cc}
f(-1) & 1 \\
f(2) & 151 \\
f(5)& 315121 \\
f(11) & 195019441 \\
f(17) & 6566760001 \\
f(23) & 74912328481 \\
f(29) & 483016364881 \\
f(41) & 7790284054561 \\
f(47) & 23304888110401
\end{array}
\right)
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This is a method that I found and like!
Just using those 9 numbers and getting 8 primes and a unit in column 2 is proof that f(x) is irreducible over Z and therefore irreducible over Q.
Although there are tricks that strengthen Eisensteins criterion, this method is stronger and much easier for computation.
factor 483016364881
483016364881: 181 22111 120691
7790284054561
7790284054561: 31 22381 11228251
23304888110401
23304888110401: 50551 461017351
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