1013813domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes k with (say) j digits that produce two other primes, x and y, from the sums x = Sum_{i=1..j} (k mod 10^i) and y = Sum_{i=0..j-1} (floor(k/10^i)).at n=17A281021Prime numbersat n=79523