A177378 - cp's OEIS frontend

A177378 a(n) is the smallest prime p>2 such that there are 2n or 2n+1 positive integers m for which the exponents of 2 and p in the prime power factorization of m! are both powers of 2.

n	a(n)
1	11
2	13
3	3
4	29
5	31
6	251
7	127
8	509
9	1021
10	4091
11	4093
12	65519
13	8191
14	131063
15	262133
16	262139
17	131071
18	1048571
19	524287
20	8388593
21	4194301
22	67108837
23	16777213
24	67108861
25	1073741789
26	2147483587
27	2147483629
28	536870909

[11, 13, 3, 29, 31, 251, 127, 509, 1021, 4091, 4093, 65519, 8191, 131063, 262133, 262139, 131071, 1048571, 524287, 8388593, 4194301, 67108837, 16777213, 67108861, 1073741789, 2147483587, 2147483629, 536870909]

cp's OEIS Frontend

A177378 a(n) is the smallest prime p>2 such that there are 2n or 2n+1 positive integers m for which the exponents of 2 and p in the prime power factorization of m! are both powers of 2.

Table of values

List of values

cp's OEIS Frontend

A177378 a(n) is the smallest prime p>2 such that there are 2*n or 2*n+1 positive integers m for which the exponents of 2 and p in the prime power factorization of m! are both powers of 2.

Table of values

List of values

A177378 a(n) is the smallest prime p>2 such that there are 2n or 2n+1 positive integers m for which the exponents of 2 and p in the prime power factorization of m! are both powers of 2.