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Main program run:

Job start : 6th June 1997 22:29:06

Job end : 8th June 1997 03:32:17

Elapsed time : 29:03:11

Main memory : 212 GB

Algorithm : Borweins' 4-th order convergent algorithm

Verification program run:

Job start : 4th July 1997 22:11:42

Job end : 6th July 1997 11:19:58

Elapsed time : 37:08:16

Main memory : 188 GB

Algorithm : Gauss-Legendre algorithm(Brent-Salamin)

Optimized main program run:

Job start : 1st August 1997 23:04:15

Job end : 3rd August 1997 00:18:47

Elapsed time : 25:14:32

Main memory : 212 GB

Algorithm : Borweins' 4-th order convergent algorithm

Q: How many hours did it take the super computer to calculate 51.5 billion digits of pi?

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60 minutes = 1 hour ⇒ 740 billion minutes = 740 billion ÷ 60 hours = 121/3 billion hours

16,666,666.666 hours in 1 billion minutes

One billion years is approximately 8,765,810,000,000 hours.

4 billion years = 3.50632511 × 1013 hours

11,666,666,666 hours 11.6 billion hours which is 486 million days which is 1.33 million years

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Hello my friend sorry for taking so long dfor this question , when pi was calculated 2037 in 1949 it took 70 hours to do on the ENIAC computer. 70 hours.

60 minutes = 1 hour ⇒ 740 billion minutes = 740 billion ÷ 60 hours = 121/3 billion hours

3 hours = 3 hours PAST 12 o'clock = (3 x 1 billion) - 4.6 billion = 3 billion - 4.6 billion = -1.6 billion years = 1.6 billion years ago6 hours = 6 hours PAST 12 o'clock = -1.6 billion years + (3 x 1 billion) = -1.6 billion + 3 billion = 1.4 billion years ago

1 billion seconds is 277,777.7778 hours.

16,666,666.666 hours in 1 billion minutes

One billion years is approximately 8,765,810,000,000 hours.

4 billion years = 3.50632511 × 1013 hours

11,666,666,666 hours 11.6 billion hours which is 486 million days which is 1.33 million years

A billion...Nanoseconds (0.00027777777777777777777777.....)Microseconds (0.27777777777777777777777777.....)Milliseconds (277.77777777777777777777777777.....)Seconds (277,777.7777777777777777777777777.....)Minutes (16,666,666.66666666666666666666666.....)Hours (1 billion)Days (24 billion)Weeks (168 billion)Years (8,766 billion, or 8.766 trillion)

The duration of Mr. Billion is 1.48 hours.

1 billion hours = 114,077.1 years Using: 1 year = 365.25 days

277,777.7778 hours.