[nwuytyzf] Electron subshells

Electron subshells are named s, p, d, f, then alphabetically starting from g (or f): spdfghijklmnopqrstuvwxyz Of cour

[gwhiogia] Pouring gasoline into your cell phone every night

How much gasoline would it take to charge up a 10 watt hour smartphone battery?  We'll calculate using the units p

[plxztbea] Pierpont primes with primitive root 2

Pierpont primes have the form 1 + 2^a * 3^b.  We restrict our attention to the subset of Pierpont primes for which

[dyrnrrin] Quick partial factorization and isprimroot in Pari/GP

\\ return the last composite in a possibly incomplete factorization, or 2 if it is a complete prime factorization. 

[fneixtxj] Multiplicative groups of some primes below 2^127

Here is some Pari/GP (Version 2.9.4) code calculating the 64 largest primes less than 2^127, a 39-digit number.  T