I recently recieved an email from Phillips (re CPAP recall) which said "In the meantime, your device registration confirmation number is 2.02xxxxE+15." [some d

I recently recieved an email from Phillips (re CPAP recall) which said "In the meantime, your device registration confirmation number is 2.02xxxxE+15." [some digits obscurred by me, although they dropped some of the trailing digits].