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 A117528 Prime at which the cumulative sum in A117527 is prime. 1
 2, 3, 13, 41, 43, 109, 137, 167, 181, 199, 307, 373, 421, 491, 587, 661, 1009, 1097, 1117, 1373, 1471, 1483, 1601, 1607, 1787, 1913, 2053, 2089, 2203, 2267, 2591, 2819, 2953, 3191, 3361, 3623, 3691, 3779, 3877, 4051 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS At the twin primes 41 and 43, we obtain consecutive prime integer sums of 641 and 757. LINKS FORMULA Multiply consecutive primes by e, take integer, sum until a prime sum is reached. EXAMPLE In a(5)=4007, multiplication of the prime 109*e resulted in the int sum 296. When added to previous sums, the total came to 4007, a prime. PROG UBASIC 10 Ct=1 20 B=nxtprm(B) 22 E=#e 30 C=int(B*E) 40 D=D+C 41 print Ct, B, C, D 50 if D=prmdiv(D) then print D:stop 55 Ct=Ct+1 60 goto 20 CROSSREFS Cf. A117527 A117504. Sequence in context: A259261 A141511 A235615 * A264042 A122719 A106866 Adjacent sequences:  A117525 A117526 A117527 * A117529 A117530 A117531 KEYWORD easy,nonn AUTHOR Enoch Haga, Mar 25 2006 STATUS approved

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Last modified May 28 04:00 EDT 2020. Contains 334671 sequences. (Running on oeis4.)