f.lapo.it
Lapo Luchini
Lapo Luchini friendica
Turns out that 2/3 of all 6 digits decimal #random OTP (as generated by #HOTP = RFC4226) have 4+ digits long prime factors.
#numberTheory is strange.
https://jsfiddle.net/lapo/kue9toph/
#random #HOTP #numberTheory
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