A060772 Minimal Thompson primes: a(n) is the smallest prime expressible as p1*p2*...*pk-q1*q2*...*qj, where k+j=n and {p1,...,qj} are the first n primes.

7, 11, 13, 17, 107, 41, 157, 1811, 1579, 18859, 98411, 17659, 1995293, 3517693, 2396687, 211899707, 1537380473, 2507890183, 3952306763, 341777053, 599742417059, 1733348865733, 3316679648071, 33504570543263, 29075165225531, 853500418442743, 6016564035665531, 63537798773018491, 8517623042250013

Offset: 3

Author

Len Smiley, Apr 24 2001

Keywords

• nonn

Examples

			a(9)=157=(3*5*7*11*13)-(2*17*19*23)
		

Links

• Don Reble, Table of n, a(n) for n = 3..60
• J. G. Thompson, A Method for Finding Primes, Amer. Math. Monthly, vol. 60, Mar. 1953, p. 175.

Crossrefs

Slight similarity with A003681.

Extensions

More terms from Naohiro Nomoto, Jun 24 2001

[Incorrect values a(23)-a(26) submitted by Jud McCranie, Jan 12 2016]

a(23)-a(60) (corrected and extended) from Don Reble, Jul 11 2020, added by N. J. A. Sloane, Jul 11 2020