A051131 Prime Bell numbers (A000110).

2, 5, 877, 27644437, 35742549198872617291353508656626642567, 359334085968622831041960188598043661065388726959079837

Offset: 1

Author

Ignacio Larrosa Cañestro

Keywords

• nonn

Examples

			Bell(2)=2 and Bell(3)=5 are primes, Bell(4)..Bell(6) are composite, Bell(7)=877 is prime.
		

Links

• E. T. Bell, Exponential numbers, Amer. Math. Monthly, 41 (1934), 411-419.
• The Prime Database, Bell(2841), the next term which is too large to include here.
• Eric Weisstein's World of Mathematics, Bell Number

Crossrefs

Cf. A000110, A051130.