λ
Sequence Observatory

7,584,781

19 × 617 × 647
Deficient Odd Composite

Starting at 7,584,781, the Collatz iteration reaches 1 after 103 steps. The first transition is 22754344; the starting value is odd with 8 positive divisors.

Prime Factor Structure

Factorization String 19 × 617 × 647
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 8,009,280
Proper Divisor Sum 424,499
Digit Sum / Digital Root 40 (Root: 4)
Adjacent Primes #7584761 ← → #7584793

Radix Representation

Decimal 7584781
Binary 11100111011110000001101 (23 bits)
Octal 0o34736015
Hexadecimal 0x73BC0D

Divisor Catalog (8)

1 19 617 647 11,723 12,293 399,199 7,584,781

Collatz Trajectory (103 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

7,584,781 22,754,344 11,377,172 5,688,586 2,844,293 8,532,880 4,266,440 2,133,220 1,066,610 533,305 1,599,916 799,958 399,979 1,199,938 599,969 1,799,908 899,954 449,977 1,349,932 674,966 337,483 1,012,450 506,225 1,518,676 759,338 379,669 1,139,008 569,504 284,752 142,376 71,188 35,594 17,797 53,392 26,696 13,348 6,674 3,337 10,012 5,006 2,503 7,510 3,755 11,266 5,633 16,900 8,450 4,225 12,676 6,338 3,169 9,508 4,754 2,377 7,132 3,566 1,783 5,350 2,675 8,026

More profiles

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