Dropping 373440 (size: 124, ECMed C117 cofactor)
Dropping 895560 (size: 130, ECMed C117 cofactor)
Dropping 25896 (size: 124, ECMed C120 cofactor)
Dropping 786210 (size: 134, ECMed C119 cofactor)
Dropping 558360 (size: 125, ECMed C123 cofactor)
Dropping 859020 (size: 126, ECMed C121 cofactor)
Dropping 549024 (size: 126, ECMed C117 cofactor)
Dropping 146370 (size: 125, ECMed C110 cofactor)
Dropping 546642 (size: 129, ECMed C124 cofactor)
Dropping 632310 (size: 124, ECMed C118 cofactor)
Dropping 115752 (size: 128, ECMed C125 cofactor)
Dropping 435996 (size: 129, ECMed C114 cofactor)
Dropping 889320 (size: 127, ECMed C123 cofactor)
Dropping 279630 (size: 126, ECMed C119 cofactor)
Dropping 772536 (size: 126, ECMed C121 cofactor)
Dropping 854420 (size: 125, ECMed C121 cofactor)

Dropping 95496, 584862.

Taking 95496, 584862

Unless there's something I don't know, these seem like pretty decent sequences.

Dropping 210528 (2^2*7, ECMed C121)
Dropping 852588 (2^3*3*5, ECMed C122)
Dropping 923544 (2^3*3*5^2, ECMed C121)

Dropping 344136.
Taking 118230.

Releasing 759552 (142 digits, ECMed C123)

Dropping 512596 (131 digits, 2^5*3^2, ECMed C125)

Taking 607104

Taking 333300

Releasing 536562 (131 digits, ECMed C129)

Releasing 833028 (129 digits, 2^2 * 5 * ECMed C128)