Is this number a prime number?

a) 3149810398401392821

factor(3149810398401392821) = 3149810398401392821

 

b) 3098402938409238409

factor(3098402938409238409) = (47*589783)*111775800209

 

c) 9348509189323894393

factor(9348509189323894393) = ((17*31)*421)*42135645180779

 

 

d) 2309482390481134983

factor( 2309482390481134983) = ((3^3*15901)*86017)*62537737

 

e) 3294829348201392047

factor(3294829348201392047) = (3881*754249)*1125575263

 

There you go, web2.0 is a pretty cool calculator :)