Sequence 01010101 in Pi

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Is there a number 01010101 in Pi?

Answer

In Pi, 01010101 first appears at position
16,210,470

6 times in the first 1,000,000,000 digits

Searched in the first 1,000,000,000 digits after the decimal point, position 1 = the 1 in 3.14…, overlaps counted. If the digits were independent and equally likely, a 8-digit block would be expected about 10 times there.

Positions 16,210,461–16,210,480

4359199140
16,210,470 ↑
1010101922

…76743591991401010101922389221891…

Also at positions 146,332,015, 305,929,791, 348,174,640, 600,041,838, 752,010,524.

See Also

Sequences in Pi

SequenceFound in Pi (— = not checked here)
01010086—
01010087—
01010088—
01010089—
01010090—
01010091—
01010092—
01010093—
01010094—
01010095—
01010096—
01010097—
01010098—
01010099—
01010100—
01010101Yes, first at 16,210,470 · 6 times
01010102—
01010103—
01010104—
01010105—
01010106—
01010107—
01010108—
01010109—
01010110—
01010111—
01010112—
01010113—
01010114—
01010115—

FAQ

Is there a number 01010101 in Pi?

In Pi, 01010101 first appears at position 16,210,470

How many times does 01010101 appear in Pi?

6 times in the first 1,000,000,000 digits after the decimal point, overlaps counted; with independent, equally likely digits about 10 times would be expected.

Where else does 01010101 appear in Pi?

At positions 146,332,015, 305,929,791, 348,174,640, 600,041,838, 752,010,524.