number of n-digit power primes are: 4, 8, 28, 84, 242, 744 with total 1110 pp's < 10^6 (and with 10^6 there 1111 pp's). anyone can kindly extend the list? thanks, zak -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://list.seqfan.eu/pipermail/seqfan/attachments/20021011/32f7e6dc/attachment.htm>