2,491,147

19 × 131113

Starting at 2,491,147, the Collatz iteration reaches 1 after 135 steps. The first transition is 7473442; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 19 × 131113

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 2,622,280

Proper Divisor Sum 131,133

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #2491123 ← → #2491171

Radix Representation

Decimal	2491147
Binary	1001100000001100001011 (22 bits)
Octal	0o11401413
Hexadecimal	0x26030B

Divisor Catalog (4)

1 19 131,113 2,491,147

Collatz Trajectory (135 steps to reach 1)

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

2,491,147 7,473,442 3,736,721 11,210,164 5,605,082 2,802,541 8,407,624 4,203,812 2,101,906 1,050,953 3,152,860 1,576,430 788,215 2,364,646 1,182,323 3,546,970 1,773,485 5,320,456 2,660,228 1,330,114 665,057 1,995,172 997,586 498,793 1,496,380 748,190 374,095 1,122,286 561,143 1,683,430 841,715 2,525,146 1,262,573 3,787,720 1,893,860 946,930 473,465 1,420,396 710,198 355,099 1,065,298 532,649 1,597,948 798,974 399,487 1,198,462 599,231 1,797,694 898,847 2,696,542 1,348,271 4,044,814 2,022,407 6,067,222 3,033,611 9,100,834 4,550,417 13,651,252 6,825,626 3,412,813

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