4,248,247

661 × 6427

Starting at 4,248,247, the Collatz iteration reaches 1 after 136 steps. The first transition is 12744742; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 661 × 6427

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 4,255,336

Proper Divisor Sum 7,089

Digit Sum / Digital Root 31 (Root: 4)

Adjacent Primes #4248227 ← → #4248253

Radix Representation

Decimal	4248247
Binary	10000001101001010110111 (23 bits)
Octal	0o20151267
Hexadecimal	0x40D2B7

Divisor Catalog (4)

1 661 6,427 4,248,247

Collatz Trajectory (136 steps to reach 1)

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

4,248,247 12,744,742 6,372,371 19,117,114 9,558,557 28,675,672 14,337,836 7,168,918 3,584,459 10,753,378 5,376,689 16,130,068 8,065,034 4,032,517 12,097,552 6,048,776 3,024,388 1,512,194 756,097 2,268,292 1,134,146 567,073 1,701,220 850,610 425,305 1,275,916 637,958 318,979 956,938 478,469 1,435,408 717,704 358,852 179,426 89,713 269,140 134,570 67,285 201,856 100,928 50,464 25,232 12,616 6,308 3,154 1,577 4,732 2,366 1,183 3,550 1,775 5,326 2,663 7,990 3,995 11,986 5,993 17,980 8,990 4,495

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