[throw5away]

I generated two random 35 digit primes, multiplied them, and then tossed the product into the first hit for "factor integer online": https://www.alpertron.com.ar/ECM.HTM

1731 322587 637083 705865 442033 654804 904216 446486 784497 444181 466938 498269 (70 digits) = 25317 847509 490819 861309 522806 413689 (35 digits) × 68383 482718 586893 688113 139227 257221 (35 digits) Time elapsed: 0d 0h 0m 23.8s

This is in JavaScript on a single core on my laptop.

[megameter]

Ran the same program and input on my phone.

Time elapsed: 0d 0h 5m 38.2s

[saagarjha]

Took about 50s on my iPhone.