Irregular primes with irregularity index six.

Terms

a(0) =527377a(1) =1360847a(2) =1490743a(3) =1725079a(4) =2007661a(5) =2722957a(6) =2845463a(7) =4303463a(8) =4715099a(9) =5950559a(10) =6667159a(11) =7008977a(12) =9855107a(13) =12873181a(14) =13153159a(15) =13442441a(16) =19085603a(17) =19552727a(18) =20015917a(19) =20763709a(20) =21528113a(21) =22598887a(22) =24828259a(23) =27198713a(24) =32030981a(25) =32831549a(26) =35455291a(27) =35548949