4567

This number is a prime.

Just showing those entries submitted by 'Bui Quang Tuan': (Click here to show all)

4567, 4^4 + 5^5 + 6^6 + 7^7 + 4567, 4^4 + 5^5 + 6^6 + 7^7 + 4567 + 4*5*6*7, and 4567 +/- 4*5*6*7 are all prime. [Bui Quang Tuan]