A226092 -id:A226092 - cp's OEIS frontend

A226098 Fifth powers that become prime when their most significant (leftmost) decimal digit is removed.

32, 243, 59049, 161051, 371293, 6436343, 14348907, 115856201, 282475249, 844596301, 73439775749, 173726604657, 312079600999, 779811265199, 2553954421743, 2817036000549, 3515706497843, 5798839393557, 10112638401999, 12914277518099, 14530697473149

Offset: 1

Jonathan Vos Post, May 26 2013

This is to fifth powers A000584 as A226092 is to fourth powers A000583, as A226090 is to as cubes A000578, and as A225873 is to squares A000290.

			a(1) = 2^5 = 32 because when its most significant (or leftmost) digit (3) is removing the remaining 2 is prime.

Cf. A000584, A225873, A226090, A226092.

Select[Range[500]^5,PrimeQ[FromDigits[Rest[IntegerDigits[#]]]]&] (* Harvey P. Dale, Nov 10 2021 *)

A226100 Main diagonal A(n,n) of matrix A(k,n) = n-th k-th power that becomes prime when its most significant (i.e., leftmost) decimal digit is removed.

Original entry on oeis.org

12, 289, 729, 20151121, 371293, 2839760855281, 24160660561265139, 241100240228887100161, 3421941488772218992567, 845219547726738091164049, 7506514445791062595879589895041, 293936151563356954592299567713259041, 6657844787831219696900816415217242830357

Offset: 1

Jonathan Vos Post, May 26 2013

Row 1 = A(1,n) = A226099. Row 2 = A(2,n) = A225873. Row 3 = A(3,n) = A226090. Row 4 = A(4,n) = A226092. Row 5 = A(5,n) = A226098.

			a(1) = A(1,1) = 12 = first number whose first power (itself) becomes prime when its most significant (or leftmost) digit is removed.
a(2) = A(2,2) = 289 = second square which becomes prime when its most significant (or leftmost) digit is removed.
a(3) =

Cf. A000040, A226099, A225873, A226090, A226092, A226098.

cp's OEIS Frontend

A226098 Fifth powers that become prime when their most significant (leftmost) decimal digit is removed.

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