A094482 Primes of form 2^j + 137^j.

2, 139, 18773, 124097929967680577

Offset

1,1

Comments

The number j must be zero or a power of 2. Checked j being powers of two through 2^20. Thus a(5) > 10^4400000. Primes of this magnitude are rare (about 1 in 10.3 million), so chance of finding one is remote with today's computer algorithms and speeds. - Robert Price, Apr 29 2013

Links

Table of n, a(n) for n=1..4.

Example

j=0: p=1+1=2; j=1: p=2+59=61; j=2: p=4+18769=18773; j=8: p=256+37^8=124097929967680577; the j exponents are powers of 2.

Crossrefs

Cf. A082101, A094473-A094480, A045637.

Sequence in context: A054681 A152509 A265462 * A265176 A101232 A093887

Adjacent sequences: A094479 A094480 A094481 * A094483 A094484 A094485

Keyword

nonn

Author

Labos Elemer, Jun 01 2004

Status

approved