A173649 Primes found in decimal expansion of 1/Pi.

3, 31, 31830988618379067153776752674502872406891

Offset

1,1

Comments

Primes found in A049541.

The next prime a(4) = 31830988618...32476310351 has 1153 digits.

Links

Table of n, a(n) for n=1..3.

Example

1/Pi = 0.3183098861837906715377675... so a(1) = 3, a(2) = 31.

Maple

Digits := 100; n0 := evalf(1/Pi); for i from 1 to 500 do x := trunc(10^i*n0): if isprime(x) then printf(`%d, `, x): fi: od:

Crossrefs

Cf. A000796, A049541.

Sequence in context: A317482 A136582 A356516 * A210648 A119937 A254312

Adjacent sequences: A173646 A173647 A173648 * A173650 A173651 A173652

Keyword

nonn,base,bref

Author

Michel Lagneau, Nov 24 2010

Status

approved