Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

**Stangerzv****Member**- Registered: 2012-01-30
- Posts: 232

Consider this equation

Where P1, P2 are Primes numbers greater than 2, n is an integer and Ps is the resulting Prime

My computer Intel core I5 seems won't be able to calculate the prime beyond n>50 when P1 & P2 not even larger than 20.

Taking log on one prime yields:

2^nlogP1, when n=20, and P>10, the prime calculated could be at least 1 million digits.

Some primes are governed by this generalize equation and can be read here www.oeis.org.

*Last edited by Stangerzv (2013-06-23 16:53:16)*

Offline

**Stangerzv****Member**- Registered: 2012-01-30
- Posts: 232

Examples:

1) Prime http://oeis.org/A121824

2)

Ps=29, {1 106797 700023 024077 725094 307737 472968 581258 525130 036534 958183

195262 352487 003994 998424 001716 919039 694617 585799 997538 773692 828512

364527 389432 832278 502186 775641 690620 955004 441454 802124 251331 895165

393028 954365 090623 874561}....My computer failed to calculate further.

3)

Ps=107182721..My Computer failed on calculating for n>12

4)

Ps=89, 14321, .. My Computer failed on calculating for n>12

4)

Ps=149, 41801, 3487882001, 24330595937854957601 .. My Computer failed on calculating for n>12

5)

Ps=37, 16692759230113....My computer failed on calculating for n>15.

*Last edited by Stangerzv (2013-06-23 14:53:09)*

Offline