The composite cofactor of 10,274+ was the product of 77-digit, 88-digit, and 90-digit prime numbers:

77-digit prime factor:
11621897163409200201223887528138662702903389700229845471814520224606678003269

88-digit prime factor:
1651732052430074361873884440693609861769561877782463897348222686035759826875067120033981

90-digit prime factor:
178720049686128661890023146702383771619725932844782734965468342419910154928823674286045929

The factors will be reported to the Cunningham project and will be recorded on Page 122.