Necessary and sufficient conditions for 2, 3, 5, and 7 to be seventh powers (mod p) (p a prime s 1 (mod 7)) are determined.

Additional Metadata
Journal Pacific Journal of Mathematics
Citation
Leonard, P.A. (Philip A.), & Williams, K.S. (1974). The septic character of 2, 3, 5 and 7. Pacific Journal of Mathematics, 52(1), 143–146.