Titanic Prime whose Digits are all Prime/Historical Note

Historical Note on Titanic Prime whose Digits are all Prime
According to in his  of $1997$, this titanic prime was discovered by  in $1988$, but this has not been corroborated.

At the time it was the largest such prime number known.

It needs to be investigated whether this record has been broken since then.

It was unfortunately misreported by as $7532 \times \dfrac {10^{1104} - 1} {10^4 - 1} + 1$, which is composite.

This mistake was propagated by, who repeated it in his of $1997$.